 Richard Steven HorvitzZim (voice) | Zim (voice) |
 Rosearik Rikki SimonsGIR / Bloaty (voice) | GIR / Bloaty (voice) |
 Andy BermanDib (voice) | Dib (voice) |
 Melissa FahnGaz (voice) | Gaz (voice) |
 Jhonen VasquezComputer / Minimoose (voice) | Computer / Minimoose (voice) |
 Wally WingertAlmighty Tallest Red (voice) | Almighty Tallest Red (voice) |
 Olivia D'AboTak's Ship (voice) | Tak's Ship (voice) |
 Rodger BumpassProfessor Membrane (voice) | Professor Membrane (voice) |
 Kevin McDonaldAlmighty Tallest Purple (voice) | Almighty Tallest Purple (voice) |
 Eric BauzaBracelet Monster / Announcer / Angry Man / Boy (voice) | Bracelet Monster / Announcer / Angry Man / Boy (voice) |
| BBreehn BurnsHot Dog Guy (voice) | Hot Dog Guy (voice) |
 Justin RoilandFoodio 3000 / Weird Alien #1 / Excited Audience Member (voice) | Foodio 3000 / Weird Alien #1 / Excited Audience Member (voice) |
 Fred TatasciorePeace Day Host / Comms Officer / Ham V.O. / Alien Guard / Man (voice | Peace Day Host / Comms Officer / Ham V.O. / Alien Guard / Man (voice |
 Jenny GoldbergFloopsy / Martha / Happy Lady / Weird Alien #3 / Girl / Pizza Kid (voice) | Floopsy / Martha / Happy Lady / Weird Alien #3 / Girl / Pizza Kid (voice) |
 Mo CollinsRobo-Mom (voice) | Robo-Mom (voice) |
 Michael McDonaldRobo-Dad (voice) | Robo-Dad (voice) |
 Paul GreenbergPoonchy (voice) | Poonchy (voice) |
