The clothes that keep a character recognizable
Mario and Luigi's caps and overalls carry a family resemblance, with color and proportions making each brother distinct. Peach's crown and Bowser's horns and shell establish other familiar outlines. These details let the games change abilities and settings dramatically while keeping the cast easy to recognize.
A transformation with its own rules
The Super Bell in Super Mario 3D World gives the cast feline forms, while Super Mario Bros. Wonder introduces the Elephant Fruit. Those appearances belong to power-ups within particular adventures. They should be understood in the game that gives them their abilities, rather than as permanent stages in the characters' lives.
When Luigi or Peach takes the lead
Luigi's Mansion sends the more nervous brother into haunted places to rescue people he cares about. His ghost-catching equipment gives that courage a practical shape. Princess Peach: Showtime! places Peach on the Sparkle Theater's stage, where different roles change what she can do in each performance.
Bowser beyond a single rivalry
Bowser is usually the force disrupting the Mushroom Kingdom, but a game can also ask him to cooperate. Super Mario RPG brings him into a party with familiar enemies, while Odyssey dresses him for a wedding he is determined to impose. The setting explains the costume and the relationship being played out.
