- Christian Slater - The Narrator (voice)
- Eugene Mirman - Denis (voice)
- Justin Roiland - Papers / Narrator’s Dad / Picante’s Dad (voice)
- Parker Simmons - Kingdom / Big / Aqua Agua’s Dad (voice)
- Frances Conroy - Barb (voice)
- Asjha Cooper - Ghost (voice)
- Xolo Mariduena - Aqua Agua (voice)
- Ben Schwartz - Kingdom’s Dad (voice)
- Ben Schwartz - Simon (voice)
- Caleb McLaughlin - Mo-Slo (voice)
- Kevin Smith - Boobie Face (voice)
- Kenan Thompson - Mo-SLO’s Dad (voice)
- Gary Anthony Williams - Ghost’s Dad (voice)
- Jenny Yokobori - Laser baby (voice)
- Fred Tatasciore - Superbrain (voice)
- Jason Isaacs - Butcher (voice)
- Kieran Culkin - O.D. (voice)
- Simon Pegg - Hughie (voice)
- Michael Cera - Great Wide Wonder (voice)
- Dominique McElligott - Maeve (voice)
- Kimberly Brooks - PR Type (voice)
- Kevin Michael Richardson - Jack From Jupiter / Ironcast (voice)
- Eliot Glazer - Boyd (voice)
- Emily V. Gordon - Erin (voice)
- Colby Minifie - Ashley (voice)
- Angela Marie Volpe - Boombox’s Mom (voice)
- Angela Marie Volpe - Doctor / Nurse (voice)
- Nasim Pedrad - Cherry (voice)
- Kumail Nanjiani - Vik (voice)
- Awkwafina - Sky / Areola / Turd (voice)
- Seth Rogen - Drug Dealer (voice)
- Chace Crawford - The Deep (voice)
- Nicole Byer - Bree (voice)
- Don Cheadle - Nubian Prince (voice)
- John DiMaggio - Groundhawk (voice)
- Chris Diamantopoulos - Server (voice)
- Chris Diamantopoulos - CLF Leader / TV Reporter (voice)
- Somali Rose - Maya (voice)
- Aisha Tyler - Nubia (voice)
- Randall Duk Kim - John (voice)
- Khary Payton - Vought Tactical Leader / Vought Thug (voice)
- Andy Samberg - Gary (voice)
- Youn Yuh-jung - Sun-Hee (voice)
- Grey DeLisle - CLF Woman - Sharon / Woman Hostage (voice)
- Grey DeLisle - News Woman / Fang / Human Tongue's Mom (voice)
- Grey DeLisle - Vought Rep / Tiffany (voice)
- Giancarlo Esposito - Stan Edgar (voice)
- Jermaine Fowler - CLF Man - Ted (voice)
- David Marciano - Vought Handler / CLF Man - Gary (voice)
- Elisabeth Shue - Madelyn Stillwell (voice)
- Antony Starr - Homelander (voice)
- Ursula Taherian - CLF Woman - Liz / Reporter 2 (voice)
- Sean Patrick Thomas - Reporter 1 / Male Hostage (voice)
- Retta - Ghost's Mom (voice)
- Darick Robertson
- Garth Ennis
- Pavun Shetty
- Ken F. Levin
- Simon Racioppa
- Ben Kalina
- Shannon Prynoski
- Seth Rogen
Seth Rogen hace el papel de Drug Dealer (voice).
Christian Slater hace el papel de The Narrator (voice).
Eugene Mirman interpreta a Denis (voice) en la serie.
Justin Roiland interpreta a Papers / Narrator’s Dad / Picante’s Dad (voice) en la serie.
Frances Conroy interpreta a Barb (voice) en la serie.
Asjha Cooper interpreta a Ghost (voice) en la serie.
Xolo Mariduena hace el papel de Aqua Agua (voice).
Caleb McLaughlin hace el papel de Mo-Slo (voice).
Ben Schwartz interpreta a Kingdom’s Dad (voice) en la serie.
Kenan Thompson interpreta a Mo-SLO’s Dad (voice) en la serie.
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