Suggestions by @bathannates

Sam Neill

as Their Master in Duel of the Fates

Tye Sheridan

as Younger Son in Duel of the Fates

Dev Patel

as Older Brother in Duel of the Fates

Léa Seydoux

as Lucifer Morningstar in The Endless

Oliver Jackson-Cohen

as The Corinthian in The Endless

Guillermo del Toro

as Fiddler’s Green in The Endless

Navid Negahban

as Cain in The Endless

Kayvan Novak

as Abel in The Endless

Thomasin McKenzie

as Delirium in The Endless

Keke Palmer

as Death in The Endless

Thom Yorke

as Matthew the Raven in The Endless

Christopher Eccleston

as Lucien in The Endless

Tom Waits

as Merv Pumpkinhead in The Endless

Giancarlo Esposito

as Destiny in The Endless

Alexander Skarsgård

as Destruction in The Endless

Agathe Rousselle

as Desire in The Endless

Hunter Schafer

as Danielle Hall in The Endless

Andy Serkis

as Despair in The Endless

Dev Patel

as Dream in The Endless

Al Pacino

as Carmine Falcone in Catwoman: When in Rome