From the Super Mario Wiki
Skylanders: SuperChargers is a toys-to-life video game and the fifth installment in Activision's Skylanders series, released in September 2015 for the Wii U, Xbox One, PlayStation 4, Xbox 360, and PlayStation 3, and later in October for iOS. Skylanders: SuperChargers Racing was released as a standalone title for Wii and the Nintendo 3DS on the same date, and it features only the racing portion.
The Nintendo versions of both games feature various Mario-related elements, including a playable Donkey Kong and Bowser (where they are referred to as Turbo Charge Donkey Kong and Hammer Slam Bowser, respectively). Donkey Kong drives a "Barrel Blaster" with Diddy Kong, and Bowser drives a "Clown Cruiser" (both of which are Land and Sky vehicles, respectively). Koopa Troopas, Dry Bones, Koopa Paratroopas and Warp Pipes appear in Bowser's moveset, and Bullet Bills can be fired when he is in the Clown Cruiser. Donkey Kong uses Barrels (which can be thrown or used on his hands like boxing gloves), classic Donkey Kong girders and ladders in his moveset.
Like other Skylanders games, playable characters are activated by purchasing toys and placing them on the Skylanders stand that connects to the console. Thus, Bowser and Donkey Kong have received their own Skylanders figures that activate them as playable in-game. These toys also have a switch on the base that allows them to work as amiibo, meaning they are compatible with any titles that support amiibo of Bowser or Donkey Kong. Additional dark versions of the Bowser and Donkey Kong Skylanders and their vehicles have also been released. Bowser is bundled available with the Nintendo 3DS version, Dark Bowser with the Wii version, and Donkey Kong and Dark Donkey Kong both have separate bundles for the Wii U version.
The next game in the Skylanders series was released in October 2016, titled Skylanders: Imaginators. The Wii U version of title is compatible with the Bowser and Donkey Kong figures, and thus, the two could be played in that game as well. A Nintendo Switch version was later released on March 3, 2017 as a launch title for the console, and is also compatible with the two figures.
At GameStop, the Wii U version of the game had a pre-order exclusive comic book titled Skylanders: Unexpected Allies. This comic book could also be received by pre-ordering either the Nintendo 3DS or Wii version of SuperChargers Racing. The comic illustrates of how Donkey Kong and Bowser came to become part of the SuperChargers team.
References to other games