Season Regulars 3

1. 

   Madeleine Martin

   Fionna Campbell (voice)

2. 

   Roz Ryan

   Cake (voice)

3. 

   Tom Kenny

   Simon Petrikov / Ice King (voice)

Guest Stars 11

1. 

   Kayleigh McKee

   Scarab (voice)

2. 

   Dee Bradley Baker

   Reindeer Boy Boss / Farmworld Chet / Trauma Jon (voice)

3. 

   Eric Bauza

   Peanut / Tromo / Tire Seller (voice)

4. 

   James Kyson

   Big Destiny / Handbag Helmet (voice)

5. 

   Jeff Bennett

   Choose Bruce / Earmworld Dad (voice)

6. 

   Jeremy Shada

   Farmworld Finn / Ice Finn (voice)

7. 

   Sean Rohani

   Prismo (voice)

8. 

   Maria Bamford

   Farmworld Mom / Wildberry / Finn's Kid #1 (voice)

9. Mickey Zacchilli

   Little Destiny (voice)

10. Tiffany Wu

    Jay / Finn's Kid #2 (voice)

11. 

    Nia Castro

    Bonnie (voice)

Crew 26