King Dice

On the Inkwell Isles, Cuphead and his brother Mugman are two fun-loving kids who live under the watchful eye of Elder Kettle. Against the elder's warnings, the brothers enter the Devil's Casino and begin playing craps. When they go on a winning streak, the Devil himself offers to raise the stakes. If Cuphead and Mugman can win one more roll, they will receive all the money in the casino; if not, the Devil will take their souls. Cuphead loses by rolling snake eyes, and he and Mugman beg for mercy. The Devil makes a deal with them: collect the "soul contracts" that signify his ownership of the souls of his runaway debtors by midnight the next day, and he might let them keep theirs. They visit Elder Kettle, who gives them a potion that allows them to fire blasts from their fingers to aid in their quest, but also warns them the debtors may change themselves to different things in attempt to stop them.

Ms. Chalice appears to be a cheerful albeit manipulative person, for example tricking Mugman to eat an astral cookie to swap places with him in the first cutscene of the DLC. However, she is also shown to be quite selfless and compassionate to others, she is willing to give up her pursuit of the Wondertart after learning it requires an actual soul to be created, and was happy to have made two new friends instead.

Like her last name says, Ms. Chalice is an anthropomorphic light yellow chalice, with a golden lip and handles, and a golden-and-white-striped straw sticking out of her head, similar to that of Mugman.

Her facial features consist of a small golden nose, round eyes with a trio of eyelashes on each and a yellow mole under her right eye.

She wears a black long-sleeve shirt, a light blue skirt with white bloomers, white gloves with either white or yellow cuffs and a pair of golden ballet flats.

Mugman is a joyful and goofy person and "kidult" who cares for his older twin brother Cuphead very much. He is more cautious than his brother and is a bit of a worrier. While he secretly loves the adventures Cuphead drags him into, he often frets about the collateral damage they might cause. He has a somewhat dorky nature and tends to over-prepare for a battle rather than jumping right in.

Mugman is fun-loving like Cuphead, but is shown to be careful and less rash compared to his brother, and acts as the voice of reason for him. This is shown when he begs Cuphead to not make the deal with The Devil, as that would end up costing them their souls in the introduction.

Mugman is very similar in overall appearance to his older twin brother Cuphead, with his head reminiscing a mug and his body being almost identical to his sibling: wearing a black, long-sleeve shirt, white gloves, a pair of shorts and brown shoes, although artworks sometimes show him with yellow gloves.

What's different about Mugman's appearance compared to his brother is having a blue color scheme for contrast to Cuphead's red, a shorter straw (which elongates to a longer length in one of his intro animations breaks 20% of the way up from the bottom when something hurts him only to pull itself back together), and a much bigger nose. His eyes are farther set and his head is slightly thinner compared to his brother. His body also separates at the waist upon taking damage but pulls itself together within half a second.

His ghost form when his health hits zero makes him legless with his legs replaced by a ghostly tail. In this state, he doesn't have shorts. Mugman can also summon an ally that resembles his ghost form albeit more muscular with one of his Super Arts.

Cuphead is typically a nice person and an "kidult" alongside his younger brother Mugman, enjoying an easy-going and good life, but is relentlessly optimistic. Although his confidence and drive for adventure can lead him to appear reckless or get him into trouble, at his core, he is a kind-hearted soul who wants to do good—but has the tendency to leap before he looks.

Cuphead seems to be a daredevil. He is shown to be the more confident, fun-loving and slightly cheeky type. He (in contrast to his twin brother) often takes quite the amount of risks. His personality was mostly inspired by the "charming, yet trouble-making" character archetype, as seen in the protagonists of early cartoons.

As seen in the introduction, Cuphead seems to have a somewhat greedy personality, apparently willing to risk anything to get what he wants, causing the infamous bet which he nearly cost him both of their souls. Despite his flaws, however, he seems to be kind-hearted and has good intentions overall, such as in the good ending where he and Mugman burn all the soul contracts, setting everyone free.

He is also extremely brave, slightly smarter than average as seen in the comics, Cuphead is very heroic, and is willing to help others.

Cuphead also seems to have a vengeful side to him. As seen in after Chef Saltbaker mourns the destruction of his bakery, Mugman and Chalice showed some sympathy for him, while Cuphead on the other hand, angrily states he got what he deserved, as he was still upset that Ms. Chalice/Mugman/he was kidnapped for the wonder tart, and duped by the chef.

Cuphead loves his family and friends. He is very loyal to them, despite his flaws, and will do everything he can to protect them.

As his name suggests, Cuphead's head is a wide cup with his soul inside, topped with a red and white striped straw. His face consists of eyes that are very close together with black pie-cut pupils, and a small red nose. He always has a determined expression in the face of danger.

He is mostly seen wearing a black, long-sleeve shirt, white gloves, red shorts and brown shoes. To emulate the way characters were drawn in the game’s time period, his coloring is inconsistent; he is sometimes depicted wearing red or yellow boots, and/or yellow gloves instead. As an anthropomorphic cup, he is a light gray cup and his is made out of either ceramic or porcelain. Upon taking damage, Cuphead will separate at the waist, with his straw breaking 20% of the way up from the bottom to the top, although both Cuphead and his straw will pull themselves back together.

His ghost still has the cup-like head and gloves, but his appearance is now a ghostly blue. His shorts and legs are now replaced with a ghost tail, his straw is now a halo, and his expression is that of melancholy. In the center of Cuphead's ghost's chest, there is a pink heart which can be parried to resurrect him. When used as a Super Art, his ghost is muscular and his expression is determined.

As the series' own interpretation of Satan, the Devil is an appropriately sinister character, being feared for his adept use of trickery and deception. By taking advantage of his victims' latent greed, the Devil is shown to use gambling at his casino as a method by which to encourage his victims into making increasingly reckless Faustian bets, eventually culminating in the forfeiture of their soul to him upon their loss. While only the ruler of the underground depths known as Inkwell Hell, the threat of his influence can nevertheless be felt all across Inkwell Isle. Even Cuphead and Mugman are said to have received "many warnings" by the Elder Kettle to steer clear of the casino entirely. He is also very evil, as when Cuphead loses and the devil wins the bet, he is always willing to take their souls with no problem at all. The Devil has no problem of using something to destroy a person during a battle, showing him as not just evil, but unusually very murderous too. Despite these traits, whenever he is talking to his closest minions, such as King Dice, he is usually happy and normal to talk and chat with him.

Both a liar and a cheat, the Devil naturally has no problem with going back on his promises so long as it benefits him, turning Cuphead and Mugman into his slaves for handing over the soul contracts in spite of promising to spare them if they do. He holds very little sympathy for those in his employment, as shown when he declares his right-hand man, King Dice, a "good-for-nothing lackey" after the latter has been beaten. Since then he had still remained as the dark figure that people fear, as all the other bosses were afraid about being the Devil's slaves.

With the exception of his face, hands, and feet, the majority of the Devil's body is covered in short black fur. While the color of his face matches that of his fur, the bare skin on his hands and feet are a much lighter grey; at the end of each of his fingers and toes are short, pointed claws. He is often illustrated carrying a pitchfork in his hand and/or tapping the big toe on one of his feet.

The Devil is almost always shown sporting an ear-to-ear toothy grin. He has round and protruding cheeks, a furrowed brow and heavily-lidded yellow eyes. He also has a drooping and round nose, a tail with an arrow-shaped tip, smooth horns and ears that are pointed at their tips. Much like his lackey, King Dice, his normally small and black pupils seem to gain large and red irises when behaving in a particularly sinister manner.

He is normally depicted as being quite tall in comparison to the rest of the cast, with the ability to change his size and shape at will. This includes being able to remove his skin from his skeleton and jump out of it all together. He is also confirmed to have a tail with a spade-shaped tip at its end, but this has only been depicted in official Studio MDHR artworks published before and after the game's release. As such, he is never actually shown with a tail.

King Dice is an extremely sleazy, deceitful, untrustworthy and manipulative individual. While on the surface he has the personality of an energetic and easygoing entertainer, he nevertheless can be as cruel and sadistic as his boss, The Devil, when he wants to be. Equally as arrogant and overconfident as the Devil, he nevertheless seems to be the more analytic and cautious amongst the working duo, as it is he who first informs his boss of the potential threat the boys may pose should they successfully fulfill their end of the bargain.

King Dice also takes his own bets very seriously, going as far as to attempt to kill the brothers when they succeed in getting all of the soul contracts after he made a bet that they would fail their mission. This possibly goes to show just how high the stakes were for him if he lost, as well.

When he talks, he often peppers his speech with stereotypical 1920s American mobster slang, using phrases such as "Now scram!', or "the Big cheese".

King Dice is roughly six feet tall, having the body of a human man, but with his head being modeled after a floating dice. In the same manner as a conventional six-sided dice, faces two through six are painted with their own corresponding number of round and purple pips. It is only side number one that has the features of a human face, with eyes, eyebrows, a mustache and a mouth. In this case, the single purple pip in the center of the dice's face serves as his nose.

He is shown wearing white dress gloves and purple dress shoes that match in color with his purple tailcoat, lavender waistcoat, dark purple pants and bow tie. He also has a pointed black mustache, high black eyebrows and shiny purple eyelids. When illustrated as behaving in an especially devious or threatening manner, he is also sometimes shown with bright green colored irises.