Harley Quinn

Kaley Cuoco

Harley Quinn (voice)

Lake Bell

Poison Ivy (voice)

Jason Alexander

Sy Borgman (voice)

Diedrich Bader

Batman / Gorilla Grodd / Doctor (voice)

Giancarlo Esposito

Lex Luthor (voice)

Sean Giambrone

Joshua (voice)

Wayne Knight

The Penguin (voice)

Ron Funches

King Shark (voice)

Howie Mandel

Howie Mandel (voice)

George López

George Lopez (voice)

Billy Bob Thornton

Billy Bob Thornton (voice)

James Gunn

James Gunn (voice)

Cathy Ang

Golden Glider (voice)

Alfred Molina

Mr. Freeze (voice)

Sanaa Lathan

Catwoman (voice)

Larry Owens

Music Meister (voice)

Sam Richardson

Swamp Thing (voice)

Matt Ryan

Constantine (voice)

Krizia Bajos

Bethany (voice)

James Corleto

Benicio (voice)

Amy Sedaris

Debbie (voice)

Larissa Gallager

Prawn (voice)

Griffin Newman

Mad Hatter (voice)

Jack Stanton

Little Bruce (voice)

James Wolk

Superman / Emcee (voice)

Briana Cuoco

Barbara Gordon (voice)

Tisha Campbell

Tawny (voice)

Rory Scovel

Gus / Assassin (voice)

Matt Oberg

Kiteman (voice) · Killer Croc (voice)

Michael Ironside

Darkseid (voice)

Jessica Walter

Wendy / Granny Goodness (voice)

Jameela Jamil

Eris (voice)

Justina Machado

Bethany (voice)

Scott Porter

The Flash (voice)

James Adomian

Bane / Ratcatcher (voice)

Christopher Meloni

Jim Gordon / Jeffrey the Parrot (voice)

Jacob Tremblay

Robin / Damian Wayne (voice)

Jonah Platt

Singing Clayface (voice)

Rachel Dratch

Nora Freeze / Reporter 2 (voice)

Will Sasso

Maxie Zeus (voice) · Maxie Zeus / Jennifer's Husband (voice)

Tony Hale

Dr. Psycho / Man / Hench (voice) · Dr Psycho / Steve (voice)

Jim Rash

The Riddler / Mr. Isley (voice) · Metallo / The Riddler (voice)

Andy Daly

Two-Face / The President (voice) · Two Face / Astronaut (voice)

Meryl Hathaway

Marcus (voice)

Rahul Kohli

Scarecrow (voice)

Nicole Sullivan

Mrs. Cobblepot / Benjamin (voice)

Alan Tudyk

The Joker / Clayface / Fancy Guard (voice) · The Joker / Firefly (voice)

Wanda Sykes

Queen of Fables (voice)