Stephanie Hsu Dr. Sleech Voice Keke Palmer Dr. Klak Voice Kieran Culkin Dr. Plowp Voice Sam Smith Dr. Azel Voice Maya Rudolph Dr. Vlam Voice, Executive Producer Natasha Lyonne Nurse Tup Voice, Executive Producer Cirocco Dunlap Executive Producer Danielle Renfrew Behrens Executive Producer Shauna McGarry Executive Producer Shannon Prynoski Executive Producer Chris Prynoski Executive Producer Antonio Canobbio Executive Producer Ben Kalina Executive Producer Robin Eisenberg Production Design