SpongeBob's Truth or Square

Carolyn Lawrence

Sandy Cheeks (voice)

Clancy Brown

Mr. Krabs (voice)

Mr. Lawrence

Plankton / Larry the Lobster / Ventriloquist (voice)

Jill Talley

Karen Plankton (voice)

Paul Tibbitt

Potty the Parrot (voice) / Patchy's Good and Bad Sides

P!nk

Self

LeBron James

Self

Bob Joles

Painty the Pirate (voice)

Harrison Fahn

Kid Singer #1

Elan Garfias

Kid Singer #2

Rosario Dawson

Self

Craig Ferguson

Self

Will Ferrell

Self

Tina Fey

Self

Robin Williams

Self

Eddie Deezen

Self

Ricky Gervais

Narrator (voice) (uncredited)