Jeremy Shada (Tree Man / Finn), Pendleton Ward (Lumpy Space Princess (voice)), Olivia Olson (Marceline the Vampire Queen (voice)), Kerri Kenney (Swan / Girl Bear / Old Lady Princess), John DiMaggio (Snowball / Boy Bear / Jake), Tom Kenny (Snowman / Ice King), Hynden Walch (Princess Bubblegum (voice)), Polly Lou Livingston (Tree Trunks (voice)), John diMaggio (Jake/Big Guy/Crossbow Guy), Dee Bradley Baker (Baby Skeleton/Rock Golem/Horse), Steve Little (Peppermint Butler), Jessica DiCicco (Flame Princess)