Suggestions by @castingsinmyblood

Fred C. Dobbs

as Gary Sinise in What if this actor played

Kilowog

as Vincent D'Onofrio in What if this actor played

Captain Hook (Disney character)

as Sacha Baron Cohen in What if this actor played

Mystique

as Angelina Jolie in What if this actor played

General Chang

as Christoph Waltz in What if this actor played

Master Splinter

as George Takei in What if this actor played

Don Quixote

as Roddy McDowall in What if this actor played

Alpha Trion

as Jonathan Harris in What if this actor played

Wally West/The Flash

as Freddie Prinze Jr. in What if this actor played

Batman (Bruce Wayne)

as Tony Goldwyn in What if this actor played

Vermin

as Bill Moseley in What if this actor played

Apple White

as Dove Cameron in What if this actor played

Iron Man (Tony Stark)

as Robert Goulet in What if this actor played

Darkseid

as Bill Duke in What if this actor played

Bibbo Bibbowski

as Dean Norris in What if this actor played

Metallo (John Corben)

as Sam Worthington in What if this actor played

Superman (Clark Kent)

as Chris Sarandon in What if this actor played

Parasite

as Tim Blake Nelson in What if this actor played

Nero Wolfe

as Robbie Coltrane in What if this actor played

Hrothgar (Beowulf)

as Kenneth McMillan in What if this actor played