Suggestions by @jgrim

Hiroyuki Sanada

as Shredder in Teenage mutant Ninja Turtles

Jackie Chan

as Master splinter in Teenage mutant Ninja Turtles

Sean William Scott

as Michaelangelo in Teenage mutant Ninja Turtles

Jim Parsons

as Dontellio in Teenage mutant Ninja Turtles

Jensen Ackles

as Rapheal in Teenage mutant Ninja Turtles

Colton Haynes

as Leonardo in Teenage mutant Ninja Turtles

Rick Yune

as Martin Li in Spider-Man: Swinging Protectors

J.K. Simmons

as J. Jonah Jameson (Flashback) in Marvel Cinematic Universe -- Legends Four

Alex R. Hibbert

as Miles Morales in Spider-Men

Tom Holland

as Peter Parker in Spider-Men

Booboo Stewart

as James Proudstar in X-Force

KJ Apa

as Captain Marvel in Dark Avengers

Godfrey Gao

as The Shredder in The Shredder

Finn Wittrock

as Talon in Batman: The Court of Owls

Robert Pattinson

as Bruce Wayne in Batman: The City of Owls

Finn Wittrock

as William Cobb in Batman: The City of Owls

Trevor Jackson

as Elijah bradley in Young Avengers

Alden Ehrenreich

as Han Solo in Star Wars Legends Universe

Billie Lourd

as Leia Organa in Star Wars Legends Universe

Sebastian Stan

as Luke Skywalker in Star Wars Legends Universe