Suggestions by @comodin

Adam Driver

as Severus Snape in The Marauders Season 1

Score: +1

Aaron Taylor-Johnson

as James Potter in The Marauders Season 1

Score: +1

Karen Gillan

as Lily Evans in The Marauders Season 1

Score: +1

John Lithgow

as Doctor Thorn in Percy Jackson and the Olympians Movie Series 2010 - 2017

Score: +1

Dove Cameron

as Ghost Spider in Viral Studios & Comodin's Random Marvel What If Ideas

Score: +1

Danny Ramirez

as Falcon in Avengers Forever

Score: +1

Gal Gadot

as Cleopatra in Caesar

Score: +1

Alexandra Daddario

as Rouge in Avengers Forever

Score: +2

Rami Malek

as Silver Surfer (2020) in What if the MCU Had Opposite rights?

Score: +1

Keanu Reeves

as Ghost Rider (2016) in What if the MCU Had Opposite rights?

Score: +1

Cillian Murphy

as Ultimate Alliance: Rise of Doom (2018) in What if the MCU Had Opposite rights?

Score: +1

Ursula Andress

as Lena Luthor in Richard Donner's Supergirl II

Score: +1

Helen Slater

as Linda Lee in Richard Donner's Supergirl II

Score: +1

Sean Bean

as Fantastic Four: Into the Negative Zone (2013) in What if the MCU Had Opposite rights?

Score: +1

Jon Favreau

as Violet Hulk in Viral Studios & Comodin's Random Marvel What If Ideas

Score: +1

Gugu Mbatha-Raw

as Vixen in Rebuild of the DCEU (2008-2019)

Score: +1

Michael Mando

as Mac Cargan / Scorpion in Spider-Man: Brand New Day

Score: +1

Richard E. Grant

as X-Men: Sinster Experiments (2019) in What if the MCU Had Opposite rights?

Score: +1

Ciarán Hinds

as Ghost Rider: The Ridrer versus the Devil (2018) in What if the MCU Had Opposite rights?

Score: +1

Alan Ritchson

as Garoche Tarkin in Star Wars: Lost Command

Score: +1