Suggestions by @mephilesthedark

Mark Fischbach

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

Matthew Patrick

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

Matthew Lillard

as Reverse Flash in New Voice Actors to Play Marvel and DC Characters

Jeremy Irons

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

Mark Fischbach

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

Alejandro Saab

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

Matthew Patrick

as The Riddler in Batman Villains (James Gunn's DCU)

General Kai

as Cary-Hiroyuki Tagawa in Deceased Actors’ Casting You Would’ve Loved to See

Lord Shen

as Cary-Hiroyuki Tagawa in Deceased Actors’ Casting You Would’ve Loved to See

Tai Lung

as Cary-Hiroyuki Tagawa in Deceased Actors’ Casting You Would’ve Loved to See

Satan (Helluva Boss)

as Kevin Conroy in Deceased Actors’ Casting You Would’ve Loved to See

Shere Khan

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Scar (The Lion King)

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Ra's al Ghul (Henri Ducard)

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Mr. Freeze (Dr. Victor Fries)

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Lex Luthor

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Count Dooku (Darth Tyranus)

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Judge Claude Frollo

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

William Afton

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See

Professor Hugo Strange

as Peter O'Toole in Deceased Actors’ Casting You Would’ve Loved to See