Suggestions by @bosuthebluehedgehog

Woody Harrelson

as King Shark in New Voice Actors to Play Marvel and DC Characters

Wallace Shawn

as The Penguin in New Voice Actors to Play Marvel and DC Characters

Eric Bauza

as Howard the Duck in New Voice Actors to Play Marvel and DC Characters

Michael Cudlitz

as Colossus in New Voice Actors to Play Marvel and DC Characters

Roger Craig Smith

as Guy Gardner in New Voice Actors to Play Marvel and DC Characters

Brian Bloom

as Peacemaker in New Voice Actors to Play Marvel and DC Characters

Seth Green

as Condiment King in New Voice Actors to Play Marvel and DC Characters

Ben Schwartz

as Condiment King in New Voice Actors to Play Marvel and DC Characters

Amanda Seyfried

as Poison Ivy in New Voice Actors to Play Marvel and DC Characters

Kate Micucci

as Squirrel Girl in New Voice Actors to Play Marvel and DC Characters

Marc Moceri

as The Riddler in New Voice Actors to Play Marvel and DC Characters

Cindy Robinson

as Harley Quinn in New Voice Actors to Play Marvel and DC Characters

David Dastmalchian

as The Spot in New Voice Actors to Play Marvel and DC Characters

Cody Christian

as Sentry in New Voice Actors to Play Marvel and DC Characters

Sonequa Martin-Green

as Storm in New Voice Actors to Play Marvel and DC Characters

Lupita Nyong'o

as Storm in New Voice Actors to Play Marvel and DC Characters

Amanda Seyfried

as Jean Grey in New Voice Actors to Play Marvel and DC Characters

Common (rapper)

as John Stewart in New Voice Actors to Play Marvel and DC Characters

Kimiko Glenn

as Jubilee in New Voice Actors to Play Marvel and DC Characters

Darren Criss

as Gambit in New Voice Actors to Play Marvel and DC Characters