Joseph Gordon-Levitt

Character: Ethan

Seth Rogen

Character: Isaac

Anthony Mackie

Character: Chris

Lizzy Caplan

Character: Diana

Jillian Bell

Character: Betsy

Mindy Kaling

Character: Sarah

Michael Shannon

Character: Mr. Green

Lorraine Toussaint

Character: Mrs. Roberts

Randall Park

Character: Boss

Ilana Glazer

Character: Rebecca Grinch

Nathan Fielder

Character: Joshua

Heléne Yorke

Character: Cindy

Aaron Hill

Character: Tommy Owens

Tracy Morgan

Character: Narrator / Santa

Darrie Lawrence

Character: Nana

James Franco

Character: Self

Miley Cyrus

Character: Self

Kamal Angelo Bolden

Character: Kamal

Baron Davis

Character: Self

Chuck Muckle

Character: Piano Playing Uncle

Curt Bouril

Character: Cindy's Husband

Brooke Liddell

Character: Cindy's Daugher

Kiley Liddell

Character: Cindy's Daughter

Jason Mantzoukas

Character: Bad Santa #1

Jason Jones

Character: Bad Santa #2

Clem Cheung

Character: Deli Owner

Harolyn Blackwell

Character: Opera Singer

Natalie Knepp

Character: Coat Check Girl

Cameron Earl Thrift

Character: Singing Kid

Jeremy Vimes

Character: Hunan Waiter

Gabriel Long

Character: Karaoke Singer #1

Michaela Sprague

Character: Isaac's Daughter

Euan Morton

Character: Coat Check Patron

Marilyn O'Connell

Character: Old Lady

Richard Hughes

Character: Train Conductor

Theodora Miranne

Character: Woman

Nicola Fiore

Character: Exotic Dancer (uncredited)

Aly Mang

Character: Party Attendee & Pro Athlete Girlfriend (uncredited)

Marija Skangale

Character: Snow Globe Dancer (uncredited)

Bill Walters

Character: Christmas Bartender (uncredited)

Hannah Townsend

Character: Tommy's Hot Girl (uncredited)

Oliver Solomon

Character: Karaoke Singer #1 (uncredited)