|This needs a stretch. (Feel to remove when satisfied of completion.)|
* History is incomplete.
The Opera Ghoul was the disguise of Devon Barton.
He is a green-skinned ghost-like goblin with gray hair. He wears a black shirt. As well as black boots.
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Scooby-Doo! (DC Comics)
He wanted a chance to perform in front of the audience to show he was better than the leading man, Rudy Fortissimo. His fiancee Amara Aria helped him. He succeeded; he was able to get the leading part back and Fortissimo was dropped from the show.