Cast of Bad Santa

Billy Bob Thornton plays Willie Soke, a conman who poses as Santa Claus to rob department stores.

Tony Cox portrays Marcus Skidmore, Willie's partner in crime who helps him with the theft plans.

Brett Kelly plays Thurman Merman, a naive and kind-hearted boy who becomes attached to Willie.

Bernie Mac plays Gin, the head of the mall security who has suspicions about Willie and Marcus.

John Ritter plays Bob Chipeska, the mall manager who is oblivious to Willie's true intentions.

Lauren Graham portrays Sue, a bartender who becomes romantically involved with Willie.

Lauren Tom plays Lois, who is involved with the holiday season festivities at the mall.

Octavia Spencer plays Opal, a character who adds to the film's humor through her interactions.

Cloris Leachman voices Grandma (uncredited), contributing to the quirky family aspect of the story.

Lorna Scott plays the Milwaukee Mother (uncredited), part of the chaotic holiday scene.

Billy Gardell portrays the Milwaukee Security Guard (uncredited), adding to the film's comedic tension.

Alex Borstein plays the Milwaukee Mom with Photo (uncredited), participating in the holiday mayhem.