Stephanie Hsu

Dr. Sleech (voice)

Keke Palmer

Dr. Klak (voice)

Maya Rudolph

Dr. Vlam (voice)

Kieran Culkin

Dr. Plowp (voice)

Sam Smith

Dr. Azel (voice)

Natasha Lyonne

Nurse Tup (voice)

Greta Lee

(voice)

Cirocco Dunlap

(voice)

Rory Culkin

(voice)

Macaulay Culkin

(voice)

Christian Culkin

(voice)

Shane Culkin

(voice)

Kemah Bob

(voice)

Andrew Dismukes

(voice)

Phil LaMarr

(voice)

Lennon Parham

(voice)

Gary Anthony Williams

(voice)

Bowen Yang

(voice)

Tracee Ellis Ross

(voice)

Jay Ellis

(voice)

Jessica Lowe

(voice)

Abbi Jacobson

(voice)

John Waters

(voice)

Grey DeLisle

(voice)