Suggestions by @mr_vengeance

Henry Cavill

as Aragorn in The Lord of the Rings

Score: +4

Nicholas Hoult

as Legolas in The Lord of the Rings

Score: +4

Asa Butterfield

as Frodo Baggins in The Lord of the Rings

Score: +2

Adam Driver

as Lex Luthor in The DC Extended Universe

Score: +2

Jon Hamm

as Batman in The DC Extended Universe

Score: +4

Richard Armitage

as Batman in The DC Extended Universe

Score: 0

Viggo Mortensen

as General Zod in The DC Extended Universe

Score: -1

Emmy Rossum

as Lois Lane in The DC Extended Universe

Score: +1

Charlie Hunnam

as Aquaman in The DC Extended Universe

Score: +2

Eli Goree

as Cyborg in The DC Extended Universe

Score: +3

Joe Keery

as The Flash in The DC Extended Universe

Score: +1

Olga Kurylenko

as Wonder Woman in The DC Extended Universe

Score: -1

Superman (Clark Kent)

as James Mangold in Directors for characters

Score: +5

Rila Fukushima

as Mercy Graves in Superman

Score: +1

Superman: Secret Origin

as Inspirations in Superman

Score: +1

Superman: Birthright

as Inspirations in Superman

Score: +1

Superman (New 52)

as Inspirations in Superman

Score: +1

James Mangold

as Writer in Superman

Score: +1

Laeta Kalogridis

as Writer in Superman

Score: +1

James Mangold

as Director in Superman

Score: +1