Guest Stars Audrey Bennett voices Astrid Jeff Bennett voices Evil Choose Goose Hynden Walch voices Princess Bubblegum Jeremy Shada voices Finn Olivia Olson voices Marceline Audrey Bennett voices Young Marceline Dee Bradley Baker voices Mudskipper Dee Bradley Baker voices Bear Dee Bradley Baker voices Goo Zombies Phil LaMarr voices Dog Tourist Phil LaMarr voices Tourist #4 Phil LaMarr voices Goo Zombies Dan Mintz voices TV Hynden Walch voices Child Wizard Hynden Walch voices Tourist #3 Cristina Valenzuela voices Skater Fairies Erica Mendez voices Skater Fairies Jack Pendarvis voices Dirt Beer Guy