- Sherman Howard - Oog-Oh (voice)
- Philece Sampler - Scientist #4 / Germ Woman / Tiny Germ Voice (voice)
- Mo Collins - RoboMom / Zita (voice)
- Wally Wingert - Red / SIR (voice)
- Candi Milo - Mrs. Buggy / Giganto Baby (voice)
- Candi Milo - Girl (voice)
- Candi Milo - Clara / Woman in Crowd (voice)
- Dee Bradley Baker - Santa Gerg / Guy in Crowd #1 / Cutest Little Kid (voice)
- Kathryn Fiore - Kid / Santa Fan #2 / Little Girl (voice)
- Jeffrey Jones - Presidentman / Crowd Man / Guy in Crowd #2 (voice)
- Brad Abrell - Announcer (voice)
- Jhonen Vasquez - Minimoose / Computer / Precocious Kid / Kid in Crowd (voice)
- Jhonen Vasquez - Computer Voice / Old Kid / Brian (voice)
- Phil LaMarr - The Letter M (voice)
- Michael McDonald - RoboDad / Crewman (voice)
Jeffrey Jones hace el papel de Presidentman / Crowd Man / Guy in Crowd #2 (voice).
Melissa Fahn interpreta a Gaz (voice) en la serie.
Lucille Bliss hace el papel de Ms. Bitters (voice).
Andy Berman hace el papel de Dib (voice).
Rodger Bumpass interpreta a Professor Membrane (voice) en la serie.
Richard Steven Horvitz interpreta a Zim (voice) en la serie.
Rosearik Rikki Simons interpreta a GIR (voice) en la serie.
Kevin McDonald interpreta a Almighty Tallest Purple (voice) en la serie.
Capítulo disponible en las siguientes plataformas:
