SpongeBob's Truth or Square

Tom Kenny

as SpongePob SquarePants / Gary (voice) / Patchy the Pirate

Bill Fagerbakke

as Patrick Star / Male Streaker (voice)

Rodger Bumpass

as Squidward Tentacles / Priest / Security Guard (voice)

Carolyn Lawrence

as Sandy Cheeks (voice)

Clancy Brown

as Mr. Krabs (voice)

Mr. Lawrence

as Plankton / Larry the Lobster / Ventriloquist (voice)

Jill Talley

as Karen Plankton (voice)

Paul Tibbitt

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

Pink

as Self

LeBron James

as Self

Bob Joles

as Painty the Pirate (voice)

Harrison Fahn

as Kid Singer #1

Elan Garfias

as Kid Singer #2

Rosario Dawson

as Self

Craig Ferguson

as Self

Will Ferrell

as Self

Tina Fey

as Self

Robin Williams

as Self

Eddie Deezen

as Self

Ricky Gervais

as Narrator (voice) (uncredited)

Robert Smigel

as Triumph the Insult Comic Dog (voice)

Gregg Turkington

as Camera Operator