William Salyers

Rigby (voice)

Mark Hamill

Skips (voice)

Sam Marin

Benson / Pops / Muscle Man (voice)

Roger Craig Smith

Thomas (voice),Low Five Ghost (voice),John / Robot (voice),.....

Janie Haddad Tompkins

Margaret (voice),Margaret / French Actress (voice),Margaret / Girl #1 (voice),.....

Courtenay Taylor

Starla (voice),Starla / Starla's Sister (Ana) / Muscle Baby (Tina) (voice),Audrey / Party Zoe / Chrissie (voice),.....

Steve Blum

Carter (voice),Muscle Bro (voice),Rick / Astronaut / Monster (voice),.....

Vanessa Marshall

Toothpick Sally (voice),News Reporter / Old Lady (voice)

Fred Tatasciore

Muscle Dad (voice),Goose #1 / Playco #1 (voice),Farmer Jimmy / Turkey (voice),.....

Matthew Mercer

Chance Sureshot / Recap Robot (voice)