James Adomian
President of the Planet (voice)
40 episodes
Jeff Bennett
Clerk McGirk / Ranger Rhino / Rasta Rat / Sleazy Beave (voice)
40 episodes
John DiMaggio
Burgerstein / Shragger / Armpit Willy (voice)
40 episodes
Dyana Liu
Tiny Goosey (voice) / Lady Primavera (voice)
9 episodes
Justin Roiland
Psychopath Giraffe (voice) / Psychopath Giraffe / Radical Rick (voice) / Radical Rick (voice)
7 episodes
Gary Anthony Williams
Robert R. Cade (voice) / DJ Wheelbarrow Full of Nachos (voice) / Coach McGinty (voice)
3 episodes
Yuri Lowenthal
Prince Mermeow (voice) / Prince Mermeow / Jr Sneezy (voice)
2 episodes
Danny Jacobs
Barbershop Quartet (voice) / Cuddles Jr. / Lasagna (voice)
2 episodes
Ashly Burch
Lila Twinklepipes (voice)
2 episodes
Maile Flanagan
Clerk / Jr Elephant / Jr Barton (voice)
1 episode
David Cross
Thaddeus D. Actwell (voice)
1 episode
Patton Oswalt
Jimmy Ron Cricket (voice)
1 episode
Dylan Saunders
Tooth / Fortune Cookie (voice)
1 episode
Tom Kenny
Earthworm / Steve (voice)
1 episode
Debra Wilson
Nasty Cat / Mrs. Manelli (voice)
1 episode
Rob Paulsen
Professor Huh? / Octopus King of the Nerds (voice)
1 episode