Clark Duke - Jawbreaker Guy (ep93), Justin Rockcandy (ep93).Clancy Brown - Demon Cat (ep11), Evil Guy (ep11), Narrator (ep8).Christopher Monahan - Gumdrop Guy (ep74).Brian Doyle-Murray - Prince Huge (ep50).Brian Baumgartner - Georgy (ep25), Private in Movie (ep25).Bobcat Goldthwait - Bird#1 (ep40), Ed (ep40).Billy West - Erik (ep88), Goose (ep88), Mayor (ep88).Ava Acres - Candy Girl (ep62), Candy Kids (ep80), Sunshine (ep121), Young Marceline.Ashly Burch - Breezy (ep82), Bun Bun (ep131), Celina (ep93), Cheryl (ep93).Andy Samberg - Bear#1 (ep24), Party Pat, Rap Bear (ep77).Andrew Daly - Gamergate (ep90), King of Ooo, Wyatt (ep72).Alia Shawkat - Betsy (ep93), Charlie (ep136).Alan Oppenheimer - Darren the Ancient Sleeper (ep84), Sun (ep84).
