Don-chan

Don Wada, typically known as Don-chan, or simply Don, is the main character of the Taiko no Tatsujin series, and appears as a default playable character in Mario Kart Arcade GP DX. Don has two downloadable palette swaps in the game that dress him in strawberry and knight costumes, known officially as Strawberry Don-chan and Hero Don-chan respectively. These variants allow him to use a Special Item. These items are the Cake and Shield.

Additionally, Don-chan appears in Super Smash Bros. for Nintendo 3DS / Wii U and Super Smash Bros. Ultimate as one of the characters that Pac-Man can randomly summon during his Namco Roulette taunt.

Trivia

 * Preceding Don-chan's appearance in Mario Kart Arcade GP DX, the Mario franchise crossed over with the Taiko no Tatsujin series, as music from Super Mario Bros. and New Super Mario Bros. Wii appeared in the Taiko no Tatsujin series prior.