Suggestions by @captainjthgamemaster

The Toad

as Ian Mckellen in Actors' Best Roles

Score: +1

Magneto (Ian McKellen)

as Ian Mckellen in Actors' Best Roles

Score: +5

Gandalf the Grey

as Ian Mckellen in Actors' Best Roles

Score: +5

Rasputin

as Christopher Lloyd in Actors' Best Roles

Score: +3

Judge Doom

as Christopher Lloyd in Actors' Best Roles

Score: +4

Doc Brown

as Christopher Lloyd in Actors' Best Roles

Score: +6

Hacker (Cyberchase)

as Christopher Lloyd in Actors' Best Roles

Score: +1

Yzma

as Eartha Kitt in Actors' Best Roles

Score: +3

Megabyte

as Tony Jay in Actors' Best Roles

Score: +2

Hugo Weaving

as Asgore in Undertale/deltarune

Score: +1

John Hurt

as Ganondorf / Ganon in The Legend of Zelda (1998 2D Animated Don Bluth film)

Score: +1

John Hurt

as Ganondorf in The Legend of Zelda (2003 2D Animated Don Bluth film)

Score: +1

Jesse McCartney

as Silver in Sonic the Hedgehog 4 (2028)

Score: 0

Kimiko Glenn

as Amy Rose in Sonic the Hedgehog 4 (2028)

Score: 0

Benjamin Evan Ainsworth

as Link in The Legend of Zelda: Live Action

Score: +3

Bo Bragason

as Zelda in The Legend of Zelda: Live Action

Score: +1

Alyson Stoner

as Dot in a Bugs life 2

Score: +1

Jeff Bennett

as Heimlich in a Bugs life 2

Score: +1

Michael Palin

as Manny in a Bugs life 2

Score: +1

Katey Sagal

as Gypsy in a Bugs life 2

Score: +1