Shiver

Master Mega's attacks are the same as the previous phase, but he will now fire his beam three times. Master Mega crawls faster in this phase, making the time to damage him on the arena shorter.

Shiver will fall off again and when splatted, she respawns on Master Mega and accidentally drops her smoke bomb into the water. This sends the two flying out the level and clearing off the ink.

Once the ink clears off the screen, the vault holding the treasure will open and a launchpad will be available to take the player to it.

In addition to the previous phase attacks, Master Mega can make three ink tornadoes and leaps from each of them before firing a beam of ink in a straight line. Master Mega will leave his mouth open briefly after attacking, leaving enough time to throw a bomb (or Smallfry) to make him fall onto the arena.

Shiver will fall off Master Mega again after he is stunned from enough damage. Once splatted, she will respawn on Master Mega. Master Mega will again roar to clean off the ink, starting the third phase.

Master Mega circles around the arena inside the water, occasionally attacking with vertical slashes of ink or by charging straight at the player, both being able to break armor. Master Mega can submerge inside the water and will swim under the arena until he reaches the indicated attack spot and will attempt to eat the player similar to a Maws.

Master Mega may be damaged while he is swimming in the water, being able to avoid the vertical ink slashes with timed jumps. The easier way of dealing damage would be to throw either a bomb or Smallfry into Master Mega's mouth. If he swallows it, he will fly into the center of the arena and slowly start crawling back into the water.

Once Master Mega is stunned with enough damage, Shiver will fall off and is able to be splatted. Shiver will respawn on Master Mega. He will roar loud enough that the ink is cleaned off, beginning the second phase.

Master Mega is a shark introduced in Splatoon 3. He first appears in Return of the Mammalians as part of the third reachable boss fight, where he attacks the player under Shiver's command. He returns as a supporting character and Showstopper in Splatoon Raiders.

Shiver and Master Mega are the third bosses of the single-player mode Return of the Mammalians, in the mission, The Pursuit of the Precious. In the first phase, Master Mega uses three simple attacks. For his first attack, he circles the player in a ring of ink around a platform (which Agent 3 stands on), occasionally sending out vertical slashes. In his second attack, Master Mega charges at Agent 3 with his mouth open, which Agent 3 can throw a bomb or Smallfry into. For Master Mega's third attack, he goes underground, creating a ring around him, similar to a Maws, which sounds an alert when Agent 3 is inside the ring. Agent 3 can drop a bomb into the ring, and Master Mega will catch the bomb.

Once Master Mega swallows a bomb, he flies onto the platform and tries to crawl back into his ring of ink, where Agent 3 can use his vulnerable state to splat him while he is crawling. Once splatted, Shiver falls off Master Mega, making her vulnerable as well.

In the second phase, Master Mega makes ink tornadoes to charge up his main attack, where he fires a beam of ink at Agent 3.

In the third phase, Master Mega fires three beams of ink at Agent 3 instead of one. Master Mega also crawls faster after swallowing a bomb.

In the The Ursine Anomaly - #03, Master Mega makes another appearance after Shiver lends him to Agent 3 to help them boost into space to stop Mr. Grizz.

Big Man is the only male idol character in the Splatoon (series), as well as the only one that is not an Inkling or Octoling.
The boss battle with Big Man is a reference to the boss battle with Phantamanta in Super Mario Sunshine. Besides having a similar appearance of a splitting silhouette of a manta ray, the color of Big Man's ink is also nearly identical to the electric goop Phantamanta produces. His title, "The Hype Manta Storm", is also a reference to the name of the mission in which Phantamanta is fought, "The Manta Storm".
His titles in the Japanese, French, German, and Italian versions also reference the Super Mario Sunshine mission. The Dutch title is translated directly from the English mission name in Super Mario Sunshine, which does not have an official Dutch translation; likewise, the Korean and Chinese titles are translated from the Japanese title.

The European Portuguese translation of Big Man's Nintendo Direct reveal is the only localization where Big Man speaks normally, without any translation brackets.
Despite Big Man's lack of hands, The Art of Splatoon 3 reveals that he is in fact dexterous, mentioning his skill in weaponry and musical instruments. This is demonstrated by him being a good pianist and playing the keyboard, and in the Gear vs. Grub vs. Fun Splatfest art, he is seen using a Nintendo Switch.

However, whenever new weapons are announced in Anarchy Splatcast, Big Man asks whether or not any of the newly-added weapons are fin operated, implying he cannot use some of the weapons used by Inklings and Octolings.
As seen with his costumes during various special splatfests, Big Man is seemingly capable of changing the markings on his fins and legs.

Big Man was born into the Manta Clan, well-known for representing the Splatlands. He met Shiver and Frye through their familial ties, but remained acquaintances with them. By middle school, he had taken an interest in music, becoming skilled at the piano. This skill brought Shiver and Frye knocking on his classroom door when they decided they wanted accompaniment for their singing. This led to the formation of Deep Cut as it is known today. Big Man used to find Shiver and Frye intimidating, and feared that they wanted to fight him when they first approached him to ask about forming a band.

After this, an older classmate asked the trio to make a cheering song for a school competition. Big Man and Frye agreed, but Shiver demanded 30,000G payment, which led to the creation of Hide and Sleek, Deep Cut's very first song. A local bowling alley commissioned a song for a commercial, to which Shiver hiked their price up to 300,000G, and what resulted was their second song, Smeared Canvas, with Big Man's lyrics being inspired by losing in the last round of bowling. The success of the commercial, and the song along with it, made Deep Cut relatively well known in the Splatlands.

A few years later, Deep Cut were made the hosts of the Anarchy Splatcast.

Big Man is also the head of the Manda Ryuu, one of the oldest dance schools in the Splatlands, and is currently the head of the Manta Clan. This is shown in Sunken Scroll 12, where a family tree can be seen on the left side of the scroll, indicating Big Man's lineage.

Ian BGM is an alias of Big Man under which he collaborated with the Squid Sisters on the song Liquid Sunshine (which is credited to "Squid Sisters feat. Ian BGM"). The Twitter announcement of the song describes Ian BGM as "an enigmatic Splatlandian singer".[12] There were several hints to Ian BGM's true identity upon the song's release, including its official music video showing his lyrics in gray (with Callie's and Marie's in magenta and green, respectively), his voice in the song matching Big Man's voice (with him also saying "Ay!" at one point),[13] and the name "Ian BGM" being an anagram of "Big Man", which is the case in all other languages as well.

In the Deep Cut song Big Betrayal, released several months after Liquid Sunshine, Shiver and Frye, having discovered Big Man's secret identity as Ian BGM, berate him for collaborating with the Squid Sisters without their involvement. In the song's official music video, Frye is seen holding a photo of the Squid Sisters alongside Big Man assuming his Ian BGM identity, showing him wearing a King Flip Mesh and Retro BluFocals rather than his usual headgear.
The Ian BGM alias is mentioned by Pearl in Side Order upon obtaining Big Man's Palette, surprising Marina (who was not aware that they were the same person). It is discussed again in Interview: The Great Big Three-Group Summit!, in which Callie accidentally reveals the "secret" of Ian BGM being Big Man, but he remarks that "everyone knows now". In the Grand Festival's results dialogue, Big Man agrees to stay loyal to Deep Cut and not pursue any more collaborations.

This laid-back disposition does not mean he is lazy, however. Big Man is the primary lyricist and producer of Deep Cut and is a noted hard worker, having put Anarchy Rainbow through seven separate iterations over six weeks before finalizing it, with the process exhausting him to the point where he became "dried up like an uncooked lasagna noodle", in part because he refused to let Shiver and Frye provide vocals for it, doing them himself instead.[7] He mainly contributes to Deep Cut by creating the backing tracks Shiver and Frye sing to, described as being EDM based;[8] he occasionally also provides vocals in some songs. He also looks up to and actively tries to learn from other musicians like Front Roe, C-Side, and "a DJ from Inkopolis".[7] Big Man's musical style appears to have some Brazilian and Latin-American inspiration.

In the second half of Splatfests, when Deep Cut performs on the combined floats, there is a brief moment where Big Man's dance startles Shiver and Frye, making them build up more distance. This suggests that Big Man either sometimes improvises out of enthusiasm, or that Shiver and Frye underestimate his size.

Sloshers are Big Man's favored weapon class, as shown by his Palette, his card deck in Tableturf Battle, and dialogue during the Anarchy Splatcast. However, he also mentions using blasters and brushes occasionally in Anarchy Splatcast.

Big Man is the most laid-back member of Deep Cut. While Shiver and Frye can get excited when it comes to things they care about, Big Man avoids getting worked up, often mediating the other two and bringing them back down to earth. In this way, he often acts as the voice of reason for Deep Cut, reminding Frye that it is a good idea to paint turf during Turf Wars instead of just splatting enemies, and pointing out that it is ridiculous that Shiver is still so hung up on a past Turf War loss. He is the most easily influenced out of the trio and does not like to resort to violence, although he is not above making his own threats. Big Man also loves fun and having a good time. He often speaks in puns and is the first to suggest all the good attributes of something.

His speech is unique, consisting of the sound "Ay!" with a translation in parentheses. In the Japanese version, Big Man is the only Deep Cut member to use standard Japanese instead of a regional dialect, using the standard young male pronoun 僕 boku as a personal pronoun; this implies he speaks a different language from the ones Shiver and Frye speak, which is the language used in the Splatlands.

In Splatoon Raiders, Big Man's gray markings take on a green tint.

Unlike in Splatoon 3, he regularly wears clothing, wearing a green-tinted goggle headset, bandages wrapped around his fins, and a large backpack on his back. The backpack has a small squid-shaped device on its left strap, and a walkie-talkie on its right strap, which is connected to his goggle headset. A large white mat is rolled up and strapped to the top of the pack with red straps, a radio antennae is strapped to the left side of the bag, and a frying pan hangs off the right. The bag itself has Deep Cut's logo printed on it, and a blue manta ray charm is attached to the front.

In his school years, Big Man used to wear red headphones. He used to have three dark grey dots on each side of his cheeks as freckles. His size was way smaller than today, being only half the size of Shiver as a teen. His tail was also very short

Big Man is a large gray manta ray, with white dotted markings along his belly and on both sides of his pectoral fins, as well as a perpetual sheen on his body. He has a tail which is white on the front and gray on the back, seeming to extend from the white patch along his torso. He stands upright on his pelvic fins as if they were feet, and his eyes are closer to his mouth along the bottom of his body, giving him an anthropomorphic appearance. Big Man actually has more resemblance to an eagle ray than a manta ray, as his mouth is located on the underside of his body, like the former. In addition, eagle rays have prominent pelvic fins at the back of their bodies, used by Big Man as feet, whereas manta rays' pelvic fins are smaller in comparison. He also seems to resemble several other oceanic rays. Due to his large size, Big Man's amiibo does not fit the amiibo box, and he appears to stay curled inside and mentions bumping his head on the top of the box.

Big Man wears a white and red headpiece on his head, where a regular manta ray's eyes and cephalic fins would be. With a shape similar to a hammerhead shark's head, it appears to be carved out of bleached driftwood, with red swirls and a stylized "M" painted on the front. On either end of the headpiece are two gold circles, and a red rope is looped around both sides before draping around Big Man's head, both front and back. On the front, the rope passes between his eyes and nose as if to hold it in place. This particular fashion of hat-securing bears a strong resemblance to classical Japanese bandit characters, such as the Kabuki character Nezumi Kozō, a famous thief who wears a hokkamuri headscarf tied under his nose. The hokkamuri is also commonly worn by performers during certain Japanese festivals, such as the Awa Dance Festival. This could be referencing the fact that Big Man is both a Splatfest host and a bandit with Deep Cut.

Frye is the first Inkling in-game with a visible tongue. Previously, Inkling tongues had only been shown in 2D artwork, such as in the artwork for Splatoon's Naughty vs. Nice Splatfest.
Frye is the only Inkling that has colored fingertips and toe tips, that usually being a feature unique to Octolings.
When Frye introduces herself in Return of the Mammalians, her mask can be heard hitting Smallfry.
Frye has been stated to be 22 years old in early concept art in The Art of Splatoon 3.
Frye is implied to have a keen sense of smell, as she was able to smell a hidden key in the Alterna Space Center: Entrance mission.
Curiously, in the Past vs. Present vs. Future Splatfest artwork, Frye is shown to have gradientless finger tips.

Frye is also featured with gradientless finger tips in the Money vs. Experiences vs. Presents Splatfest artwork.
As such, it is implied that she has the ability to completely remove the colour on her finger tips.
One of the Grand Festival concept artworks depict her wearing faux braids woven into her tentacles, another hairstyle of African and African-American origin.

In the Japanese version, she speaks with the personal pronoun 儂 washi (most commonly used by old men), adding the particles じゃ ja, ぞ zo, and な na at the end of her sentences, and addresses people she isn't close with as お前さん omae-san. While associated with being old-fashioned, this pattern is also close to the Chūgoku dialect, particularly that of Hiroshima, and has a "jolly" association with the tone. The connotation of speaking like an old person is lampshaded in the Japanese version, as she comments「最近の若いもんはつまらんのう」, meaning "the youth of today are so dull," during her first meeting with the New Squidbeak Splatoon.
The habit of using the pronoun washi was revealed to have been picked up from her grandfather, who raised her.[1]
Also in the Japanese version, the phrasing Frye uses to describe herself ("dancing gangster"), also used as a subtitle in her boss fight, refers to moray eels being nicknamed "gangsters of the sea" (海のギャング) in Japan, hinting at her eel association.

Although Frye is described to "sing with a melody that makes you feel as if a desert is in sight", her voice actress Laura Yokozawa has a musical background that is very different from her singing style, being that of jazz.[7]
During her boss battle, Frye uses the Indian pungi flute to summon her eels. This type of flute is used for a variety of practices, but is most commonly associated with snake-charming.
Frye's family crest depicts a pitcher plant. In Japanese, the word for pitcher plant 靫葛 utsubokazura contains the word for eel, 鱓 utsubo.
If the player has Color Lock toggled, Frye's ink color in her boss fight changes from yellow to blue. Her design also changes with the yellow and the blue swapping places, and the face of the Octostomp's remains change color to blue. Also, her hair color when viewing the spinning Octostomp from the launchpad remains yellow, changing to blue only when the player superjumps into the boss arena.

Frye was born into the Onaga clan, a family of eel charmers well-known for representing the Splatlands. She was raised by her grandfather, as her parents have been traveling the world since she was a child, and grew up alongside a younger brother and younger twin sisters. Due to being busy with dance lessons and eel training, Frye notes not having had the time to make "real friends" as a child, although she used to sneak out quite a bit. She met Shiver and Big Man through their familial ties during their childhoods, but remained nothing but acquaintances with them at the time. In middle school, Frye was noted as "a little bit wild, a little bit reckless" student; in school, Frye was classmates with Shiver, and the two began looking out for each other, then started to bond over their shared love of singing. They would often go to the school rooftop and sing together, before deciding they wanted accompaniment, which lead to them seeking out Big Man, a pianist. This led to the formation of Deep Cut as it is known today.

After this, an older classmate asked the trio to make a cheering song for a school competition. Big Man and Frye agreed, but Shiver demanded 30,000G payment, which led to the creation of Hide and Sleek, Deep Cut's very first song. A local bowling alley commissioned a song for a commercial, to which Shiver hiked their price up to 300,000G, and what resulted was their second song, Smeared Canvas, with lyrics inspired by Frye's observation that "the world is a big bowling ball". The success of the commercial, and the song along with it, made Deep Cut relatively well known in the Splatlands.

A few years later, Deep Cut were made the hosts of the Anarchy Splatcast.

Frye is peppy and reckless, often wearing her emotions on her sleeve. She is known for her fearlessness and audacity, often rushing headfirst into dangerous situations without fear or hesitation. This tends to get her into trouble, which Big Man and Shiver have to save her from. Though she can sometimes appear menacing or brag about her abilities, it is all in good fun, and at her core, she is a kind and fun-loving individual.

She possesses a deep love for singing and dancing, being trained in both at a young age and becoming very physically fit as a result. She likens the different forms of her eel attacks to dances, and often dances when excited. Because of this, she is also extremely gluttonous, as evidenced by her Splatfest dialogue, where she frequently talks about food and chooses food-related teams. She has stated that she is not picky and will eat anything.

Frye can also be slightly airheaded, noted for consistently breaking into dance in the middle of Salmon Runs instead of focusing on the enemy, as well as only focusing on the "big boss" rather than the lessers. She also prefers to use a head-on approach rather than a nuanced strategy, completely ignoring the Grizzco employee handbook and stating that her winning strategy for Turf War is to "splat your enemies...then splat them again! And again!" She can also be quite the prankster, as she has a habit of stealing her bandmates' snacks, and once gave Big Man a chocolate-covered onion on Valentine's Day. She is also shown to be very indecisive regarding Splatfest choices, as per her dialogue in the Rock vs. Paper vs. Scissors, Gear vs. Grub vs. Fun, and Dark Chocolate vs. Milk Chocolate vs. White Chocolate (2023) Splatfests.

Frye's favorite weapon class appears to be splatanas, according to dialogue from Anarchy Splatcast, her Tableturf Battle deck, and her Palette in Side Order.

In the artwork for the music video of Suffer No Fools, Frye wears a hip-hop styled outfit, with her hair tied in four knots on the top of her head and having three small cuts on the left side of the hairline, closely resembling Bantu knots, a hairstyle of African and African-American origin. She wears a black sports bra with Deep Cut's wordmark printed in white under her chest, holographic baggy pants, a pair of white tennis shoes with black details and red insteps, a thin silver chain necklace with a rectangular tag, and a black earring representing Deep Cut's logo on her left ear. Her ears and fingertips have a pink gradient.

In her school days, Frye had her hair tied up in a small ponytail on top of her head with a smaller version of her fried squid ornament. She wore a black short-sleeved sailor fuku with a deep purple ribbon on the collar, thigh-length pants, and white loafers with a strap; unlike Shiver, she did not wear socks.

Her outfit consists of a sleeveless yellow turtleneck crop top under a small yellow shawl made from a shiny translucent material. She wears off-white pants that are extremely baggy, pulling inspiration from the traditional costume of certain Indian dances. Three holes on the left side of her pants reveal she wears black leggings underneath. Around her waist is a thin tan rope belt; hanging from it on the left side is a large golden squid charm with two purple tassels tied through holes in the ornament. On the top left of her head is a golden-colored hat resembling chunks of fried squid.[3] Her feet are partially covered by off-white toe-less socks, revealing purple toes.

In Alterna, she also wears a tan and white eel mask, with possible inspiration taken from Japanese tanuki masks.

In her squid form, as seen in Deep Cut's Island Misadventures, she resembles a typical Inkling, but with her signature eye mask poking out the sides of her face.

In Splatoon Raiders, Frye parts her bangs in the middle, and wears the rest of her tentacles tied in a bun, held by a tied strip of cloth. She also wears a cloth headband. Her tentacles gradate to their usual purple, and are overall messier, with an X-shaped scar on her left front tentacle.

She wears a loose yellow tank top over a fitted black sports bra. She layers black armored shorts under off-white ripped shorts, which have purple-ringed holes, similar to her regular pants. She has a single black knee pad on her left knee, and wears white and purple slide sandals over her usual toeless socks. An orange squid charm is clipped to her waist, and a golden fish hook is worn as an earring in her left ear.

Frye is an Inkling with medium brown skin and a round face, with darker brown lips and large eyes under round yellow triangle eyebrows. Her irises are golden, with yellow pupils in the shape of a diamond, similar to that of the Squid Sisters and Pearl. Her Inkling eye mask is fairly large and exaggerated, and ends with points that lift off the sides of her face. On top of her eye mask are thick yellow eyelashes with an orange gradient at the ends. Her top teeth are sharper and more prominent than other Inklings, and sometimes peek out of her closed lips like fangs.

Frye's yellow tentacles are thin and wavy, and reach about shoulder length. She styles them in two parts: one lock tied with an off-white cord framing the left side of her face, and the other tucked behind her right ear, baring most of her forehead. Her tentacles end in a light purple gradient. Frye's ears are longer and pointier than those of other Inklings, with a slight orange blush at the tips. Her right ear is pierced with three moray eel tooth-shaped earrings. Additionally, her fingertips are purple. Frye has a fun, yet rebellious sense of fashion, with a possible root in traditional Indian culture.

Unlike her bandmates, Shiver's gender was unclear upon her reveal. The resulting confusion among fans led to Nintendo representatives clarifying shortly after that Shiver identifies as female and uses corresponding pronouns.
As depicted in artwork for Morning vs. Afternoon vs. Night, Shiver plays the shamisen, much like her voice actor, Anna Sato.
According to dialogue from Land vs. Sea vs. Air, Shiver does not have a driver's license due to failing the driving test repeatedly.
According to an interview, Shiver aspires to star in musical theater.
In Splatoon Raiders' Deep Cut Briny Scroll 6, it is revealed that Shiver starred in a musical similar to The Phantom of the Opera.

On Shiver's in-game model, the position of her teeth change depending on her facial expressions. While just barely visible, in her Tableturf card The Cold Blooded Bandit - Shiver, she appears to have been given symmetrical teeth typical of Inklings- it is unclear if her original card is symmetrical or asymmetrical. However, her concert model and renders depict her with asymmetrical teeth similar to the playable Octolings, although they are mirrored.
Curiously, during the first half of the Gear vs. Grub vs. Fun Splatfest, Shiver's fingers were the only accent color to change; her octopus charm tassels and shoes turned yellow only after the halftime report.
A similar coloring error occurs during the Splatoon 3 Live Concert at Nintendo Live 2024 TOKYO: Shiver turns lime green before Deep Cut starts performing Hide and Sleek and her mouth turns to indigo, but her fingers, tassels and shoes remain red.
While most media depicts Shiver using her right hand dominantly, such as holding her fan with her right hand, the official artwork for the Spicy vs. Sweet vs. Sour Splatfest depicts Shiver holding chopsticks in her left hand. This may imply her to be ambidextrous. She shares this trait with Marie.
In the trailer presenting Fresh Season 2023's Big Run, Shiver states that she is an artist.
Shiver's hobby is counting money.
In The Art of Splatoon 3, an early concept design of Shiver was noted as being 24 years old.

In Japanese, Shiver behaves and speaks like a Kamigata (Kyoto) rakugoka, a traditional Japanese comic storyteller who specializes in expressing stories with the wave of fan and the tilting of the head. In line with Splatsville's chaotic nature and Deep Cut's music style, Kamigata rakugo is known for its usage of musical performance and less "refined" style compared to Edo (Tokyo) rakugo. As such, Shiver speaks with a very pronounced Kyoto variant of Kansai dialect, including referring to her Splatfest team with the second-person pronoun あんさんら ansanra, using the idiom おきばりやす okibariyasu ("Hang in there!"), using the copula どす dosu instead of です desu, using 何いうてはん nani iute-han ("What are you saying?"), including many other examples.
In Splatoon 3's Sunken Scroll 10, it is revealed that Shiver is a descendant from a line of shark tamers, much like how Frye is likely descended from the Onaga clan in Sunken Scroll 11. The scroll depicts an Octoling with an extremely similar appearance to Shiver. A family tree can be seen on the left side of the scroll, and implies that Shiver is the youngest heir to her clan, in contrast to Frye and Big Man who are implied to be the oldest heirs to their respective clans.
Shiver is described to have a singing style reminiscent of traditional Japanese tastes, as performed by her voice actress (Anna Sato) who has a background in Japanese folk music, more specifically Amami folk songs.
Shiver has been known to include kakegoe, a style of traditional shouting, during live performances.
The hachimaki headband Shiver wears is similar to the Traditional Headband and the Twisty Headband, pieces of headgear from previous games.

Shiver and the rest of Deep Cut are initially hostile to Agent 3 and the New Squidbeak Splatoon, declaring that all treasure in Alterna is theirs to plunder and that they will not let anyone else have it. Later, when the New Squidbeak Splatoon team agrees to give Deep Cut the treasure (after using it to remove Fuzzy Ooze), they explain that their bandit activities were to give back to the people of the Splatlands, and never meant harm to the New Squidbeak Splatoon. They decide to become Marie's employees and the player's allies, and help them in defeating Mr. Grizz. Shiver briefly lends her shark Master Mega to Agent 3 to help boost them into outer space.

By the time of Splatoon 3, Deep Cut had become relatively well known within the Splatlands for both their music and the Anarchy Splatcast. As part of Deep Cut, Shiver announces Big Runs, reports stage rotations, and hosts Splatfest events, performing her solo song, Anarchy Poisons (Bird Mix), and Anarchy Rainbow for the entire event. Deep Cut are also the ones who initially report the news of the Great Zapfish's third disappearance.

Shiver was born into the Hohojiro clan of shark tamers, well-known for representing the Splatlands. As a child, she participated in grueling training to learn shark-taming, eventually gaining the ability to tame giant sharks, a rarity even among the Hohojiro. She met Master Mega during this period, bonding with him through ritual. She met Frye and Big Man at a young age due to their familial ties, but remained acquaintances with them. When she reached middle school, Shiver took an interest in Frye, whose fiery and brave personality caught her eye. The two started looking out for each other, with Shiver often being concerned about her recklessness, before the two started to bond over their shared love of singing. They would often go to the school rooftop and sing together, before deciding they wanted accompaniment and seeking out Big Man, a pianist. This led to the formation of Deep Cut as it is known today.[5]

After this, an older classmate asked the trio to make a cheering song for a school competition. Big Man and Frye agreed, but Shiver demanded 30,000G payment, which led to the creation of Hide and Sleek, Deep Cut's very first song. A local bowling alley commissioned a song for a commercial, to which Shiver hiked their price up to 300,000G, and what resulted was their second song, Smeared Canvas. The success of the commercial, and the song along with it, made Deep Cut relatively well known in the Splatlands.

A few years later, Deep Cut were made the hosts of the Anarchy Splatcast.

Shiver presents herself as aloof and cold-blooded, a ruthless fighter who is certain of her victory. However, she is particularly quick to anger due to her competitive nature. As soon as she starts to lose to Agent 3, she begins to get visibly annoyed with the player and Master Mega. She also rarely shows affection, and when impressed, shows her admiration with sassy remarks.
Nonetheless, she appears to be the most mature member of Deep Cut, often remaining pragmatic and composed, contrasting Frye and Big Man, who tend to be more wild and reckless than Shiver. This maturity makes her a sort of leader of Deep Cut, in charge of opening and closing every Anarchy Splatcast and announcing important events like Splatfest themes and game updates. She also thinks that she is the leader, which is revealed during the results of the Shiver vs. Frye vs. Big Man Splatfest. During Splatfests, she appears to be a bit selfish, as she often votes for the more greedy teams such as Team Power and Team Money. She also occasionally comes down quite severely on her bandmates and is a deep perfectionist, sending Big Man back to the drawing board with Anarchy Rainbow several times, and often criticizing both Frye and Big Man's battle techniques. Nevertheless, she greatly cares for her bandmates, poking fun at them and sometimes showing admiration for their boldness, even saying outright that she envies Frye's self-confidence.
Despite her perfectionism and brash persona, Shiver can be surprisingly humble and understanding when she lets herself relax, as she was willing to put aside her differences and work with the New Squidbeak Splatoon, even being the one to suggest that Marie becomes their boss,[a] and happily referring to the Squid Sisters as the band's "bosses". She also seems to enjoy puns. In contrast to her bandmates' impulsiveness, Shiver seems to enjoy predictability and does not like being caught off-guard. She has stated that she listens to Sheldon's rambles and takes his advice

In the artwork for the Suffer No Fools music video, she wears a black crop top the same size as her sarashi wrap with the Deep Cut word logo patterned on it in white, a light indigo puffy-sleeved fur coat, black track pants with white stripes on the sides, and purple tennis shoes with white, black and teal details. In addition, she wears a Megalodon jawbone earring on her left ear. Her hair is a desaturated indigo fading into orange and dark teal, in a similar fashion to the representation of a sunset, and does not cover her left eye as usual; the makeup under her eyes matches the color of her tentacles, while the tips of her fingers are almost white in color.

In her school days, her hair had her signature tentacle covering her right eye, albeit shorter, and the other tentacle at the back of her head was instead tied up in a ponytail with what seems to be her hachimaki rope. She wore a black long-sleeved cropped sailor fuku with a deep purple ribbon on the collar, a long pleated black skirt that went down to her ankles, and were white loafers with a strap, resembling the Japanese gang-related fashion phenomenon known as sukeban.

In Splatoon Raiders, Shiver keeps her left tentacle styled in front of her face, and wears the rest of her hair tied in a bun, which is adorned with a shark tooth used as a kanzashi hair ornament. Her tentacles gradate to a light blue-green, and are overall messier, with a slit in her sideburns and the tentacle covering her face having more cuts and an X-shaped scar.

She wears a black cropped tank top over her sarashi chest wrap tied with a ribbon, black shorts, thigh-high grey socks, red okobo sandals, and a white half-skirt with Deep Cut's logo on it. A red and purple cord is worn cross-body, holding a green octopus charm, and a silver fish hook is worn as an earring in her left ear.

During Splatfests, the parts of Shiver's appearance that are normally indigo change to match the color of her Splatfest team while her mouth, fingertips, charm tassels and wedge heels instead take on a color that's directly complementary to her team's.

Shiver is an Octoling with pale skin and a wide, oval-shaped face, sharp indigo triangle eyebrows and slender red eyes with light red pupils in the shape of an infinity symbol, similar to Marina's pupils and matching real-life octopuses. Her Octoling eye mask is very thin and sharp, almost appearing to be cat-eyeliner makeup, with red eye shadow blended underneath. The tentacle hair is medium-length, with the left side styled over her face, hiding her left eye from view. They have a slight gradient from dull blue to bright blue, and curl slightly upwards at the ends. In addition to the eye makeup, Shiver also appears to wear a light red lip gloss.
Shiver has a cool, yet rebellious sense of fashion, with a clear root in traditional Japanese culture. She wears a white sarashi chest wrap under a long indigo shawl made from a shiny translucent material. Attached to the left side of the shawl is a large silver octopus charm with two red tassels tied through holes in it. On her legs are low-cut black leggings decorated with two slashes on her right thigh, resembling shark gills. She wears black tabi-like ankle boots with red wedge heels. Additionally, Shiver's fingertips have a bright red color. Her right ear is pierced with three shark tooth-shaped earrings. On the back of her head, circling a large suction cup on one of her tentacles, is a length of white twisted cloth tied in a knot, not unlike the traditional Japanese hachimaki headband. Hachimaki have a variety of styles, and the one worn by Shiver in particular is a common sight during certain Japanese festivals, such as the Awa Dance Festival.
During the Anarchy Splatcast and Splatfest performances, Shiver can be seen holding a white sensu fan, painted with her family crest in blue. In Alterna, she also wears a shark mask, which takes inspiration from Japanese kitsune masks with its characteristic red and white design.
In her octopus form, as seen in Deep Cut's Island Misadventures, she resembles a typical Octoling