Kevin Conroy as Narrator (voice)

Neal Adams as Self

Will Arnett as Self

David Ayer as Self

Christian Bale as Self

Brian Bolland as Self

Alan Burnett as Self

Tim Burton as Self

Mike Carlin as Self

Bradley Cooper as Self

Dan Didio as Self

Paul Dini as Self

William Dozier as Self (archive footage)

Zach Galifianakis as Self

Maggie Gyllenhaal as Self

Mark Hamill as Self

Klaus Janson as Self

Geoff Johns as Self

Jenette Kahn as Self

Emma Tillinger Koskoff as Self

Heath Ledger as Self (archive footage)

Jim Lee as Self

Stan Lee as Self (archive footage)

Jared Leto as Self

Chris McKay as Self

Frank Miller as Self

Grant Morrison as Self

Jack Nicholson as Self

Christopher Nolan as Self

Jay Oliva as Self

Dennis O'Neil as Self

Todd Phillips as Self

Joaquin Phoenix as Self

Margot Robbie as Self

Jerry Robinson as Self (archive footage)

Andrea Romano as Self

John Stephens as Self

Emma Thomas as Self

Bruce Timm as Self

James Tucker as Self

Adam West as Self

Michael Uslan as Self

Cameron Monaghan as Jeremiah Valeska/The Joker (archive footage)