Suggestions by @andymayer

Jim Cummings

as Bowser in Casting a random character every Friday #1: Bowser

A.J. LoCascio

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

Shouko Komi

as Brighter - Hazbin Hotel in If this Character Were a Villain, Which Villain Song Would They Sing?

Brainiac (My Adventures with Superman)

as This is the Thanks I Get? – Wish in If this Character Were a Villain, Which Villain Song Would They Sing?

Michael Emerson

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

Cherami Leigh

as Gwen Stacy (animation) in Casting a random character every Monday #1: Gwen Stacy (Ghost Spider)

John DiMaggio

as Thor (animation) in Casting a random character every saturday #43: Thor

Michael Emerson

as Mr. Sinister in New Voice Actors to Play Marvel and DC Characters

David Errigo Jr.

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

Eric Bauza

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

Mallorie Rodak

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

Allegra Clark

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

Cindy Robinson

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

Patti LuPone

as Mom/Carol Miller in New Voices for Futurama characters

Ray Chase

as Calculon in New Voices for Futurama characters

Jason Griffith

as Wally West (animation) in Casting a random character every saturday #42: The Flash

Jeffery Dean Morgan

as Jay Garrick (live-action) in Casting a random character every saturday #42: The Flash

David Naughton

as Jay Garrick (animation) in Casting a random character every saturday #42: The Flash

Dwight Schultz

as Jay Garrick (animation) in Casting a random character every saturday #42: The Flash

Roger Craig Smith

as The Flash (animation) in Casting a random character every saturday #42: The Flash