Guest Stars
Olivia Olson
voices Marceline
Hynden Walch
voices Bonnie
Audrey Bennett
voices Young Marceline
Stephen Root
voices Martin Mertens
Jenny Slate
voices Huntress
Billy Brown
voices Vampire King
Jeremy Shada
voices Baby Finn
Erica Luttrell
voices Hana AbadeerCo Starring
Cree Summer
voices Additional Voices
Steve Little
voices Additional Voices
Jinkx Monsoon
voices Additional Voices
