Suggestions by @kingoffantasy516

Mark Hamill

as Joker in Batman Beyond: Return of the Joker

Tessa Thompson

as Ahsoka Tano in Star Wars: Rebels

Tessa Thompson

as Adult Ahsoka in Tano: A Star Wars Story

Oded Fehr

as Ra's al Ghul in Matt Reeve's Batmanverse

Jamie Chung

as GoGo Tomago (voice) in Incredibles/Big Hero 6 Crossover

Maya Rudolph

as Aunt Cass (voice) in Incredibles/Big Hero 6 Crossover

Scott Adsit

as Baymax (voice) in Incredibles/Big Hero 6 Crossover

Samuel L. Jackson

as Lucius Best (voice) in Incredibles/Big Hero 6 Crossover

Holly Hunter

as Helen Parr (voice) in Incredibles/Big Hero 6 Crossover

Ryan Reynolds

as The Creeper in Matt Reeve's Batmanverse

Anthony Hopkins

as Calendar Man in Matt Reeve's Batmanverse

Ryan Potter

as Red Robin in Matt Reeve's Batmanverse

Loren Lester

as Nightwing in Batman/Death Note: Cat & Mouse Animated Film

Ron Perlman

as Deathstroke in Matt Reeve's Batmanverse

Emma Stone

as Batgirl/ Oracle in Matt Reeve's Batmanverse

Jeremy Irons

as Professor Hugo Strange in Matt Reeve's Batmanverse

Daniel Radcliffe

as Hush in Matt Reeve's Batmanverse

Evan Peters

as Hush in Matt Reeve's Batmanverse

Will Smith

as Deadshot in Matt Reeve's Batmanverse

David Harbour

as Detective Harvey Bullock in Matt Reeve's Batmanverse