Adventure Time: Fionna and Cake Season 1 Characters & Cast — No Spoilers
Every character in Adventure Time: Fionna and Cake season 1 with photos and the actors who play them, including Madeleine Martin, Roz Ryan, Tom Kenny — spoiler-free, nothing from later seasons.
- Fionna (voice) — played by Madeleine Martin
- Cake (voice) — played by Roz Ryan
- Simon Petrikov / Ice King (voice) — played by Tom Kenny
- Pageling Dinosaur / Pageling Warrior / Dragon (voice) / Mudskipper / Bear / Goo Zombies (voice) / Cinnamon Bun Mutant / Banana Guard Mutant #2 & #3 (voice) / ZA' Baby / Moon Demon King (voice) / Additional Voices (voice) / Ratbus / Banana Guard #1 (voice) / Reindeer Boy Boss / Farmworld Chet / Trauma Jon (voice) — played by Dee Bradley Baker
- Scarab / Mini Scarabs / Skater Z (voice) / Scarab / Miss Rabow (voice) / Scarab / Ashley (voice) / Scarab (voice) — played by Kayleigh McKee
- Prismo / Burger (voice) / Prismo (1, 2, 3) (voice) / Prismo (voice) — played by Sean Rohani
- Marshall Lee (voice) / Marshall Lee / Monster Marshall (voice) — played by Donald Glover
- Gary Prince (voice) / Gary Prince / Monster Gary (voice) — played by Andrew Rannells
- Farmworld Finn / Ice Finn (voice) / Additional Voices (voice) / Finn / Woodpecker / Coffee Guy (voice) / Finn (voice) / Baby Finn (voice) — played by Jeremy Shada
- Additional Voices (voice) / LSP / Ellis P / Norm (voice) / Ellis P / Norm (voice) / Ellis P / Old Man Cake / Nerdy Alien (voice) — played by Pendleton Ward
- Additional Voices (voice) / Normulon / Lemongrab (voice) / Lemoncarb #1 (voice) — played by Jinkx Monsoon
- Young Marceline / Astrid (voice) / Astrid (voice) / Young Marceline (voice) — played by Audrey Bennett
- Farmworld Mom / Wildberry / Finn's Kid #1 (voice) / Additional Voices (voice) / Starchy (voice) / Banana Guard Mutant #1 (voice) — played by Maria Bamford
- Evil Choose Goose (voice) / Choose Bruce / Earmworld Dad (voice) / Additional Voices (voice) — played by Jeff Bennett
- Skater Fairies (voice) / Ice Scout #2 (voice) / Additional Voices (voice) — played by Cristina Valenzuela
- Ice Scout #1 (voice) / Additional Voices (voice) / Skater Fairies (voice) — played by Erica Mendez
- Additional Voices (voice) / Lemoncarb #2 (voice) — played by Cree Summer
- Betty (voice) — played by Felicia Day
- Princess Bubblegum / Child Wizard / Tourist #3 (voice) / Princess Bubblegum / Candy Queen (voice) / Bonnie (voice) — played by Hynden Walch
- Additional Voices (voice) / Goo Zombies / Dog Tourist / Tourist #4 (voice) / Dog Cake / Nightmare Cake / Beard Guy (voice) — played by Phil LaMarr
All seasons of Adventure Time: Fionna and Cake: full spoiler-free character guide