Mathematical! The gang from Cartoon Network's Adventure Time is spilling over into free-to-play platform fighter Brawlhalla (opens in new tab). Jake the Dog, Finn the Human, and Princess Bubblegum (and it looks like BMO and Lady Rainicorn might make an appearance, too, in a new 'Buddy' game mode) are joining the fight as playable characters.
The update is "available today," so hop in and swing Jake's Baconhammer around.