Will Arnett

Batman / Bruce Wayne (voice)

Michael Cera

Robin / Dick Grayson (voice)

Rosario Dawson

Batgirl / Barbara Gordon (voice)

Ralph Fiennes

Alfred Pennyworth (voice)

Zach Galifianakis

Joker (voice)

Jenny Slate

Harley Quinn (voice)

Jason Mantzoukas

Scarecrow (voice)

Conan O'Brien

The Riddler (voice)

Doug Benson

Bane (voice)

Billy Dee Williams

Two-Face (voice)

Zoë Kravitz

Catwoman (voice)

Kate Micucci

Clayface (voice)

Riki Lindhome

Poison Ivy (voice)

Eddie Izzard

Voldemort (voice)

Seth Green

King Kong (voice)

Jemaine Clement

Sauron (voice)

Ellie Kemper

Phyllis (voice)

Channing Tatum

Superman (voice)

Jonah Hill

Green Lantern (voice)

Adam Devine

The Flash (voice)

Héctor Elizondo

Jim Gordon (voice)

Mariah Carey

Mayor McCaskill (voice)

Lauren White

Chief O'Hara / Medusa / Additional Voices (voice)

David Burrows

Anchorman Phil (voice)

Laura Kightlinger

Reporter Pippa (voice)

Brent Musburger

Reporter #1 (voice)

Ralph Garman

Reporter #2 (voice)

Chris Hardwick

Reporter #3 (voice)

Todd Hansen

Captain Dale (voice)

Chris McKay

Pilot Bill / Additional Voices (voice)

Susan Bennett

'Puter (voice)

Abel Arnett

Additional Voices (voice)

Archie Arnett

Additional Voices (voice)

Marco Campagno

Additional Voices (voice)

Garret Elkins

Additional Voices (voice)

Ryan Halprin

Additional Voices (voice)

Alison Ingram

Additional Voices (voice)

Holly Isaacson

Additional Voices (voice)

Kelly Lafferty

Additional Voices (voice)

Doug Nicholas

Additional Voices (voice)

Samantha Nisenboim

Additional Voices (voice)

Chris Paluszek

Additional Voices (voice)

Wendell Stephens

Additional Voices (voice)

Vanara Taing

Additional Voices (voice)

Matt Town

Additional Voices (voice)

Bram Tulloch

Additional Voices (voice)

John Venzon

Additional Voices (voice)

Matt Villa

Additional Voices (voice)

Charlie Bean

Additional Voices (voice)