Suggestions by @12345

Peter Dinklage

as Toad in Mario Bros

Score: +1

Guillermo del Toro

as Director in Mario Bros

Score: +1

Andrew Adamson

as Director in Mario Bros

Score: +2

Terry Rossio

as Writer in Mario Bros

Score: +1

Ted Elliott

as Writer in Mario Bros

Score: +1

Andrew Adamson

as Writer in Mario Bros

Score: +2

Johnny Depp

as Waluigi in Super Mario Bros.

Score: +1

Sacha Baron Cohen

as Waluigi in Super Mario Bros.

Score: +2

Andrew Adamson

as Writer in Super Mario Bros.

Score: +2

Clint Eastwood

as Charles Muntz in Up

Score: +14

Michael Douglas

as Carl Fredrickson in Up

Score: +7

Ben Savage

as Luigi in Super Mario Bros. The Animated Fan Film

Score: 0

Leonardo DiCaprio

as Mario in Super Mario Bros. The Animated Fan Film

Score: -1

Danny McBride

as Wario in Super Smash Bros. Universe

Score: +13

Joss Whedon

as Director in Super Smash Bros. Universe

Score: -1

Sam Raimi

as Director in Amara Moon

Score: +1