Adventure Time: Fionna and Cake Season 1 Episode 9
Casper & Nova
While Simon experiences a cosmic detour, doom closes in on Fionna and Cake.
Guest Stars
Sean Rohani
Prismo (voice)
Ron Perlman
Lich (voice)
Donald Glover
Marshall Lee / Monster Marshall (voice)
Andrew Rannells
Gary Prince / Monster Gary (voice)
Kayleigh McKee
Scarab / Mini Scarabs / Skater Z (voice)