Suggestions by @jesselee

The Riddler (Edward Nigma)

as The Riddler in Opera Man

Batman

as Batman in Opera Man

Jesselee

as Jesselee in Opera Man

Robin Williams

as Composer in Opera Man

Jim Hanks

as Writer in Opera Man

Tom Hanks

as Alfie Montgomery in The birthday girl

Mary Kay Bergman

as Tris in The birthday girl

Medusa

as Medusa in A song for you

Splatter and Dodge

as Splatter and Dodge in A song for you

Snow White (Disney character)

as Snow White in A song for you

Boba Fett

as Boba Fett in A song for you

Fa Mulan

as Fa Mulan in A song for you

Alice (Disney)

as Alice in A song for you

Cheshire Cat

as Cheshire Cat in A song for you

Stromboli

as Stromboli in A song for you

Seth Rollins

as Seth Rollins in A song for you

Mark Henry

as Mark Herny in A song for you

Ghosts

as Ghosts in A song for you

Ursula (Disney)

as Ursula in A song for you

Cruella De Vil

as Cruella De Vil in A song for you