Will Arnett

Batman / Bruce Wayne (voice)

Zach Galifianakis

The Joker (voice)

Michael Cera

Robin / Dick Grayson (voice)

Rosario Dawson

Batgirl / Barbara Gordon (voice)

Ralph Fiennes

Alfred Pennyworth (voice)

Jenny Slate

Harley Quinn (voice)

Mariah Carey

Mayor McCaskill (voice)

Channing Tatum

Superman / Clark Kent (voice)

Billy Dee Williams

Two-Face / Harvey Dent (voice)

Hector Elizondo

Jim Gordon (voice)

Conan O'Brien

The Riddler / Edward Nygma (voice)

Jason Mantzoukas

Scarecrow / Jonathan Crane (voice)

Doug Benson

Bane (voice)

Zoë Kravitz

Catwoman / Selina Kyle (voice)

Kate Micucci

Clayface / Basil Karlo (voice)

Riki Lindhome

Poison Ivy / Pamela Isley (voice)

Jonah Hill

Green Lantern / Hal Jordan (voice)

Adam Devine

The Flash / Barry Allen (voice)

Eddie Izzard

Voldemort (voice)

Seth Green

King Kong (voice)

Jemaine Clement

Sauron (voice)

Ellie Kemper

Phyllis (voice)

David Burrows

Anchorman Phil (voice)

Ralph Garman

Reporter #2 (voice)

Chris Hardwick

Reporter (voice)

Chris McKay

Pilot Bill (voice)

Laura Kightlinger

Reporter Pippa (voice)

Susan Bennett

Batcomputer (voice)

Todd Hansen

Captain Dale (voice)

Mark Jonathan Davis

Richard Cheese (voice)

Lauren White

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

Brent Musburger

Reporter #1 (voice)

Abel Arnett

Additional Voices (voice)

Archie Arnett

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)

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)