Adventure Time: Fionna and Cake Season 1 Episode 10
Cheers
Simon battles his demons as Fionna, Cake and friends fight for their world.
Guest Stars
Chelsea Peretti
Queenie (voice)
Donald Glover
Marshall Lee (voice)
Andrew Rannells
Gary Prince (voice)
Sharon Horgan
Additional Voices (voice)
Felicia Day
Betty (voice)