Bill Hader

The Cat in the Hat (voice)

Xochitl Gomez

Gabby (voice)

Tiago Martinez

Sebastian (voice)

Matt Berry

The Fish (voice)

Quinta Brunson

Sherri (voice)

Bowen Yang

(voice)

America Ferrera

The Mother (voice)

Paula Pell

(voice)

Tituss Burgess

(voice)

Giancarlo Esposito

Mr. Hoogeboom (voice)

Thomas Middleditch

Thing One (voice)

Robin Åkerstrand

Sven (voice)

Ralph Garman

(voice)

Daniel Middleton

(voice)

Roxana Ortega

(voice)

Jay Pharoah

(voice)

Wilmer Valderrama

(voice)

America Young

(voice)