Guest Stars Kenny Ridwan as Dave Kim Tim Meadows as John Glascott Stephen Tobolowsky as Principal Earl Ball Sadie Stanley as Brea Bee Beth Triffon as Joanne Schwartz Zayne Emory as JC Spink Theodore John Barnes as Brian Walls Suraj Partha as Raj Phil Abrams as Dr. Andrew Solit Co Starring Taylor Geare as Mariel Uncredited Patton Oswalt voices Narrator / Adult Adam Goldberg