Cast & crew
Regular Show: The Lost Tapes (2026)
Cast
| Sam Marin | Muscle |
| J.G. Quintel | Mordecai Wulkan |
| William Salyers | Rigby |
| Mark Hamill | Stitch (Voice) |
| Minty Lewis | Eileen Forbes |
| Janie Haddad Tompkins | Margaret |
| J.G. Quintel | Mordecai / Hi Five Ghost (voice) |
| William Salyers | Rigby (voice) |
| Sam Marin | Pops / Benson / Muscle Man (voice) |
| Mark Hamill | Skips (voice) |
Crew
| J.G. Quintel | Executive Producer |
| Sean Szeles | Executive Producer |
| Sam Register | Executive Producer |
| Ryan Slater | Producer |
| J.G. Quintel | Executive Producer |
| Paula Spence | Supervising Art Director |
| John Enroth | Original Music Composer |
| Mark Mothersbaugh | Original Music Composer |
| Sean Szeles | Executive Producer |
| Sam Register | Executive Producer |
| Ryan Slater | Producer |
| Sarah Noonan | Casting |
| Agnes Kim | Casting |
| Toby Jones | Other |
| Albert Fox | Original Music Composer |