Suggestions by @druidmaster

Danny Trejo

as Esteban Corazón de Ablo in Marvel Cinematic Universe

Jason Isaacs

as Nicholas Scratch in Marvel Cinematic Universe

Joanna Lumley

as Agatha Harkness in Marvel Cinematic Universe

Michael Sheen

as Sebastian Shaw in Marvel Cinematic Universe

Ido Mosseri

as David Haller in Marvel Cinematic Universe

Galen Gering

as Omega Red in Marvel Cinematic Universe

Rachel Weisz

as Lilandra in Marvel Cinematic Universe

David Lyons

as Robert Kelly in Marvel Cinematic Universe

Saffron Burrows

as Hecate in Marvel Cinematic Universe

Stephen Lang

as Hades in Marvel Cinematic Universe

Kevin Costner

as Poseidon Aegaeus in Marvel Cinematic Universe

Dennis Quaid

as William Stryker in Marvel Cinematic Universe

Robert Patrick

as Zeus Panhellenios in Marvel Cinematic Universe

Oliver Pocher

as Doctor Doom in Marvel Cinematic Universe

Stanislav Yanevski

as Norrin Radd in Marvel Cinematic Universe

Caitlin Wachs

as Frankie Raye in Marvel Cinematic Universe

Skeet Ulrich

as Dr. Nathaniel Essex in Marvel Cinematic Universe

Clémence Poésy

as Emma Frost in Marvel Cinematic Universe

Josh Hartnett

as Bobby Drake in Marvel Cinematic Universe

Arnold Vosloo

as Apocalypse in Marvel Cinematic Universe