Reason: After being absent out of Mario Kart Arcade GP 2, I decided to add him back into the game. Reason: Because of the fact that the former (Kirby) had his own racing game called Kirby's Air Ride in Nintendo GameCube, and the latter (Inkling) appearing in Mario Kart 8 Deluxe, I've decided to add both of them to the game to see what there gameplays look like. made his appearance in Mario Kart DS, I wanted to add the robotic operating buddy into Arcade GP 4 so he can fit as a heavy weight character.
Here are the characters that I decided to add (re-add back) in the roster: