Sega have announced Super Monkey Ball: Banana Blitz HD will have not only special costumes, but a playable Sonic the Hedgehog.
While details on how to unlock the character were not revealed at this time, the trailer did show the blue blur in action. His stats are almost 4/5 across the board, with top marks for speed.
Selecting him also changes all bananas into rings, complete with the appropriate sound effects.
Super Monkey Ball: Banana Blitz HD is launching October 29th for Nintendo Switch, PlayStation 4, and Xbox One; and Winter 2019 for Windows PC (via Steam).