| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Jeff Liu | Crew | Directing | Director | 1 |
 Adam Muto | Crew | Production | Executive Producer, Writer, Story, Storyboard | 4 |
Kate Tsang | Crew | Writing | Story, Staff Writer | 4 |
 Pendleton Ward | Crew | Creator | Creator | |
Jesse Moynihan | Crew | Writing | Story | 1 |
Hanna K. Nyström | Crew | Writing | Writer, Storyboard, Story | 3 |
Miki Brewster | Crew | Creator | Creator, Director | |
 Aleks Sennwald | Crew | Writing | Storyboard, Writer | 1 |
Scott Malchus | Crew | Production | Producer | 1 |
 Anthony Burch | Crew | Writing | Story | 1 |
 Jenny Goldberg | Crew | Art | Art Direction | 4 |
Jack Pendarvis | Crew | Writing | Story, Story Editor | 4 |
Kimson Albert | Crew | Visual Effects | Supervising Animation Director | 1 |
Maya Petersen | Crew | Writing | Storyboard, Writer | 2 |
Anna Syvertsson | Crew | Writing | Writer, Storyboard | 4 |
Hannah Garcia | Crew | Production | Production Assistant | 1 |
Allie Splain | Crew | Production | Production Manager | 1 |
Iggy Craig | Crew | Writing | Writer, Storyboard | 3 |
Charley Feldman | Crew | Writing | Story | 1 |
Christina Catucci | Crew | Writing | Story | 1 |
Haewon Lee | Crew | Writing | Storyboard, Writer | 1 |
Serena Wu | Crew | Writing | Writer, Storyboard | 1 |
 Bill Hader | Cast | Actor | Bufo (voice) | 1 |
 Dee Bradley Baker | Cast | Actor | Molto Larvo (voice) | 1 |
 Erica Luttrell | Cast | Actress | Elise (voice) | 1 |
 Hynden Walch | Cast | Actress | Princess Bubblegum / Additional Voices (voice) | 4 |
 Jeff Bennett | Cast | Actor | Limeston / Choose Goose (voice) | 1 |
 John DiMaggio | Cast | Actor | Jake / Additional Voices (voice) | 4 |
 Kent Osborne | Cast | Actor | Joshua (voice) | 1 |
 Kevin Michael Richardson | Cast | Actor | Sir Soda / Smudge (voice) | 1 |
 Maria Bamford | Cast | Actress | Margaret (voice) | 1 |
 Ron Perlman | Cast | Actor | The Lich (voice) | 1 |
 Stephen Root | Cast | Actor | Mr. M / Bob (voice) | 1 |
 Tom Kenny | Cast | Actor | Ice King / Simon Petrikov / Additional Voices (voice) | 4 |
 Charlotte Nicdao | Cast | Actress | See-Thru Princess / Ancient Glass Princess (voice) | 1 |
 Jeremy Shada | Cast | Actor | Finn / Additional Voices (voice) | 4 |
 John Hodgman | Cast | Actor | Shafter (voice) | 1 |
 Michaela Dietz | Cast | Actress | Glassboy (voice) | 1 |
 Niki Yang | Cast | Actress | BMO / Additional Voices (voice) | 4 |
 Olivia Olson | Cast | Actress | Marceline (voice) | 1 |
 Randall Park | Cast | Actor | Hugo (voice) | 1 |
 Steve Little | Cast | Actor | Peppermint Butler (voice) / Abracadaniel (voice) | 1 |
 Toks Olagundoye | Cast | Actress | Dr. Caledonius (voice) | 1 |
Pendleton Ward | Cast | Actor | Lumpy Space Princess / Additional Voices (voice) | 4 |
 Ashly Burch | Cast | Actress | Darling (voice) | 1 |
Cole Sanchez | Cast | Cole / Lenny Longlegs (voice) | 1 | |
Tom Herpich | Cast | Actor | Mr. Fox (voice) | 1 |
 Bex Taylor-Klaus | Cast | Blaine (voice) | 1 | |
 Mace Montgomery Miskel | Cast | Actor | Pep (voice) | 1 |
 Chloe Coleman | Cast | Actress | Cadebra (voice) | 1 |
 John Omohundro | Cast | Actor | Spader (voice) | 1 |
Anthony Burch | Cast | Sweetie (voice) | 1 | |
 Michelle Wong | Cast | Actress | KS-2 (voice) | 1 |
 Chris Fleming | Cast | Actor | New Death (voice) | 1 |
 Glory Curda | Cast | Actress | Y5 (voice) | 1 |
 Aryan Simhadri | Cast | Actor | Tiffany Oiler (voice) | 1 |
 Simone Giertz | Cast | CGO (voice) | 1 | |
 Audrey Bennett | Cast | Young Marceline (voice) | 1 | |
| Person | Type | Job | Role(s) | Episodes |
