Suggestions by @nathanbates

Patrick Wilson

as Lex Luthor in The Batman/Superman: World's Finest

Timothée Chalamet

as Superboy in DCEU Rebooted

The Coen Brothers

as Director in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Josh Brolin

as Buck Turgidson in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Stephen Lang

as Jack D. Ripper in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

J.K. Simmons

as Jack D. Ripper in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

John Oliver

as Lionel Mandrake in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Michael Shannon

as Buck Turgidson in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Woody Harrelson

as Buck Turgidson in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Richard Jenkins

as Merkin Muffley in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Tilda Swinton

as Dr. Strangelove in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Christoph Waltz

as Dr. Strangelove in Dr. Strangelove or: How I Learned to Stop Worrying and Love the Bomb

Jamie Bell

as Joker in D.C.E.U. Reboot

Riley Keough

as Harley Quinn in D.C.E.U. Reboot

Hailee Steinfeld

as Lois Lane in D.C.E.U. Reboot

Dakota Johnson

as Lois Lane in D.C.E.U. Reboot

Michael Shannon

as Max Shreck in Batman

Ethan Hawke

as Commissioner Gordon in Batman

Richard E. Grant

as The Joker in Batman

Ryan Gosling

as Dick Grayson in Batman & Robin