ROTTMNT Brothers.

In this particular version, the turtles have very different species and sizes. Being an alligator snapping turtle, Raph is the strongest, heaviest, and one of the tallest of the group, possessing an extremely robust and muscular physique.

In the 2018 series (Rise of the Teenage Mutant Ninja Turtles), Raphael's personality changes significantly: he goes from being the traditional lonely and hot-tempered "bad boy" to becoming the protective, optimistic, and affectionate leader of the group.

Key characteristics of Raphael in 2018:

Leadership role: Unlike other versions where Leonardo leads, in this one he assumes the leadership position of the team (the Mad Dogs).

Protective and loving: He is extremely attached to his siblings and acts like a big, affectionate, and overprotective older brother.

Impulsive with a good heart: Although he continues to act impulsively and with a lot of energy, his decisions come from a place of hope and affection for his family, not from resentment or hatred.

Insecurities and anxiety: As the leader, he frequently deals with anxiety crises while trying to protect everyone in difficult situations.

Larger physique: He is designed to be noticeably larger and more robust than his other siblings, wielding tonfas that transform into large energy claws.

Physical Characteristics: Species: Spiny turtle.
Shell: Unlike other incarnations, its true shell is soft, flat, and leathery. Therefore, it uses an artificial purple "battle shell" attached to its back for protection.
Appearance: He has jade-green skin with purple geometric markings on his arms and thighs. He has a slender build, a large head (indicating his intelligence), and three fingers on each hand and foot.
Accessories: Wears a purple mask that covers his entire head, asymmetrical glasses (one red lens and one blue lens) on top of his head, and a technological gauntlet on his wrist.
Species: Its official species is a mutant spiny turtle (Apalone spinifera). In real biology, these animals are known for having flexible shells instead of a rigid, heavy carapace. This species choice was made by the creators to create a visual contrast and justify why this version's Donatello would need to build an artificial shell.

Species:

Official Species: Modified snapping turtle (or water tiger / Red-Eared Slider). Unlike previous incarnations, it possesses characteristics of an Ornate box turtle in its base design.

Physical Characteristics:

General Appearance: He has blue-green skin, black eyes, and an athletic build, but is noticeably shorter and stockier than his brothers.
Body Markings: Features yellow-orange circles on the shoulders and thighs, a bright yellow plastron with stickers, and a navy blue carapace with yellow designs.
Outfit: Wears a short orange bandana, knee pads with face designs (one sad and one smiling), bracelets, and a belt across his chest.
Anatomy: It has three fingers on its hands and two fingers on its feet.

Michelangelo (often called Mikey) from the animated series Rise of the Teenage Mutant Ninja Turtles (released in 2018) is the youngest of the group. He is known for his extremely vibrant, optimistic, and artistic personality, and for being the emotional and mystical heart of the team.

Main Characteristics and Personality:

Incorrigible Optimist: He finds beauty and fun in practically any situation, and if there isn't any fun, he finds a way to create it.
Artistic and Creative Vein: Unlike other versions, he's a natural artist from the start. He loves tagging the lair, creating graffiti, cooking, and expressing himself in very visual ways.
Mystical Abilities: In the 2018 version, Mikey has a deeper connection to mystical ninjutsu. His main weapon is the kusari-fundo (a chain with a weight at the end) that emanates flames and magical energy.
Innocent and Sentimental: He is very affectionate, sensitive, and encourages his siblings to show emotional vulnerability. However, being the youngest, he can sometimes act impulsively or be naive, but he always demonstrates an intuitive ability to deal with problems and feelings.
Easily Frightened: Despite being a formidable ninja, he is also easily frightened and has a tendency to scream and hide inside his shell when the situation gets tense.

Species: Classification: Half mutant turtle, half human. Due to its species of origin (the alligator snapping turtle), it has much larger proportions than other turtles and an intimidating temperament.

Physical Characteristics: Size: He is the largest, most muscular, and tallest of the four brothers (he measures approximately 1.83 meters).
Cocoon and Skin: Its skin is a bright green. The plastron (the underside of the shell) is yellow-orange with pointed edges, and its carapace is dark.
Thorns: Unlike other versions, it has protruding thorns on its shoulders and one on each elbow.
Eyes and Teeth: His eyes have dark irises that turn white when he is fighting or focused. He also has a prominent sharp tooth that sticks out on his upper right jaw.
Accessories: Wears a red durag-style bandana, bandages on her wrists and ankles, and red shorts with a turtle emblem belt.

Personality and Skills: Profile: Unlike the classic versions where he is the angriest, in this series Raph is quite affectionate, playful, overprotective, and acts as the "brute force" of the group.
Powers: He develops the mystical technique "Hamato Ninpō," which allows him to project a giant avatar of spiritual energy in the shape of a turtle to deliver heavy blows.

Physical CharacteristicsSpecies: Spiny turtle.
Shell: Unlike other incarnations, its true shell is soft, flat, and leathery. Therefore, it uses an artificial purple "battle shell" attached to its back for protection.
Appearance: He has jade-green skin with purple geometric markings on his arms and thighs. He has a slender build, a large head (indicating his intelligence), and three fingers on each hand and foot.
Accessories: Wears a purple mask that covers his entire head, asymmetrical glasses (one red lens and one blue lens) on top of his head, and a technological gauntlet on his wrist.

Species:

Its official species is a mutant spiny turtle (Apalone spinifera). In real biology, these animals are known for having flexible shells instead of a rigid, heavy carapace. This species choice was made by the creators to create a visual contrast and justify why this version's Donatello would need to build an artificial shell.

In the Rise of the Teenage Mutant Ninja Turtles series (released in 2018), Donatello is the most ingenious, sarcastic, and tech-focused turtle. Unlike other versions, he is a genius with low emotional intelligence, very proud of his inventions, and prefers to rely on his high-tech gadgets rather than hand-to-hand combat.

Main Features:

Species: It is a Spiny Softshell turtle, which makes it naturally more fragile in the carapace compared to its siblings.
Weaponry: He uses a bō staff with mystical technology that transforms into various other weapons and tools during fights.
Personality: He is a "mad scientist" and dramatic, often ironic, cynical, and impatient with his siblings' predictable habits.
Emotional Intelligence: He may demonstrate low social empathy and tends to value hard logic and bluntness.
Relationship with his brothers: He acts as the "brains" of the team, but doesn't hesitate to try and solve problems independently. He has a very close relationship with Mikey, whom he considers his intellectual and creative equal.

Species: Original species: Red-eared Slider.
Current species: Mutant, half-turtle, half-human.

Physical Characteristics: Skin and Eyes: It has vibrant lime-green skin (a slightly darker green than its siblings), with black eyes that are mostly devoid of visible irises.
Markings: It has yellow stripes on its arms and thighs, as well as two red crescent-shaped marks in the outer corner of its eyes.
Shell and Plastron: The shell is bluish-grey with a bright turquoise pattern, and the plastron (belly) is yellow.
Height and Body: It measures approximately 1.65m in height. It has three fingers on each hand and two on each foot.
Accessories: She wears a long blue bandana, navy blue fingerless gloves, and calf-length toeless socks.

Personality and Skills: Profile: Unlike other more traditional versions, in this animation he starts the series as a "joker," focused on making jokes and self-proclaimed the "coolest" member of the team, only assuming the role of leader later.
Weapons: He uses the Mystic Ōdachi, a magical sword that creates interdimensional portals.

In the 2018 version (Rise of the Teenage Mutant Ninja Turtles), Leonardo is portrayed as the second oldest brother and acts as the rebellious, witty, and charismatic member of the group. Unlike the classic versions where he is the serious and stoic leader, here he is a sarcastic prankster.

Personality and Behavior:

Charismatic and playful: He is known for his humor, sarcasm, and for loving the spotlight. He uses jokes and witty remarks to deal with tense situations, sometimes doing so at inappropriate times.
Good looks vs. leadership: Initially, he wants to be seen as the "cool guy" or the coolest member of the team, but he prefers that his older brother, Raphael (Raph), handle the responsibility of being the leader.
Leader Evolution: Over time, he matures, overcoming some insecurities and embracing his true potential as a strategist and future leader of the team.

Combat Style and Skills:

Quick strategist: Beneath his carefree demeanor, he is an incredibly agile fighter and a quick tactical thinker, capable of analyzing situations and creating escape routes or plans in the heat of the moment.
Mystical weapon: He wields a mystical ōdachi, a magical sword that creates teleportation portals, allowing him to maneuver around enemies and attack from unexpected angles.

Dynamics with Siblings:

The "Middle Brother": Because he doesn't carry the initial burden of leadership, he has more time to focus on his own self-affirmation and having fun with his brothers.
Disaster Twins: He and Donatello (Donnie) have a very close dynamic of constant teasing and complementary teamwork.

In the 2018 animated series, Rise of the Teenage Mutant Ninja Turtles, Leonardo is a red-eared slider turtle. He adopts a more rebellious, charismatic, and playful demeanor, rather than focusing solely on being the disciplined and stoic leader.