Chance

Chance's appearance is as follows: gray skin and gray hair. He wears a black suit with a polygonal texture and red accents, a red tie, and a white shirt. He keeps a playing card in the suit's breast pocket. His pants are black, with no visible outer pockets. He wears sunglasses with a white diagonal accent on the left lens (from his perspective). He has black headphones with a white "L" on the ear cups, which sit beneath a black hat with a casino chip embedded along the white line on the left side.

He is an energetic and very cheerful guy, although he likes to play in the casino.

Chance was a gambler who regularly frequented the casinos owned by the Sonnellino mafia family. He had friendly relations with them before his "lucky win."

One of his hobbies: Chance can play the piano and can even perform "Twinkle, Twinkle, Little Star" with his eyes closed—it's a little "non-gambling" thing he does. He hardly talks about it.

Mafioso's nickname is Don Sonnellino, but he prefers the nickname "Mafioso"

A tall man who is your father. He has yellow skin and hair, wears black clothes (jacket, jeans, etc.), and a black hat, which almost hides Mafioso's black eyes. He usually has a calm but commanding personality.

Mafioso is the godfather of the Sonnellino crime family and the owner of an unknown casino. Mafioso and Chance used to be friends, but one day, Chance won a large prize in a rigged game—that is, the mafia rigged the game so Chance couldn't win, but his incredible luck still helped him win. Chance took the winnings and fled, thereby putting himself in debt to the mafia family. Mafioso took this as a scam and decided to track down Chance and get revenge on him for "cheating" them out of their money.
To protect the reputation of the Sonnellino family.

(The Sonnellino family is a reference to the classic Italian-American mafia.)