Suggestions by @andrearaujo

Skyler Gisondo

as Jimmy Olsen in Smallville (Remake)

Score: +1

Nicholas Hoult

as Lex Luthor in Smallville (Remake)

Score: +1

Javier Bardem

as Darkseid in Smallville (Remake)

Score: +1

Savannah Kennick

as Anna Liebert in Monster

Score: +1

Olivier Richters

as Doomsday in JLA

Score: +1

Javier Bardem

as Darkseid in JLA

Score: +1

Giancarlo Esposito

as Brainiac in JLA

Score: +1

Ella Purnell

as Bellatrix Lestrange in Harry Potter

Score: +1

Olivier Richters

as Fenrir Greyback in Harry Potter

Score: +1

Simon Baker

as Gilderoy Lockhart in Harry Potter

Score: +1

Michelle Gomez

as Minerva McGonagall in Harry Potter

Score: +1

Saxon Sharbino

as Black Canary in JLA

Score: -1

Jason Momoa

as Lobo in JLA

Score: +1

Joe Alwyn

as Oliver Queen in JLA

Score: -1

Hafþór Júlíus Björnsson

as Solomon Grundy in JLA

Score: +1

Mikey Madison

as Huntress in JLA

Score: +1

Willem Dafoe

as JOKER in JLA

Score: +1

Colin Farrell

as Penguin in JLA

Score: +1

Jude Law

as Zod in JLA

Score: +1

Mads Mikkelsen

as Brainiac in JLA

Score: -1