Suggestions by @dmcmusiclover

Chris Pratt

as Mario Mario in Mario Bros vs Sonic (Voice cast)

Score: +1

Gerard Butler

as O'Chucks in Super Mario Bros Movie Series

Score: +1

Billy Connolly

as O'Chucks in Super Mario Bros Movie Series

Score: +1

Christoph Waltz

as Ludwig von Koopa in Super Mario Bros Movie Series

Score: +2

Flula Borg

as Ludwig von Koopa in Super Mario Bros Movie Series

Score: +1

Mae Whitman

as Princess Daisy in Super Mario Bros Movie Series

Score: +1

Pedro Pascal

as Wario in Super Mario Bros Movie Series

Score: +2

Mikey (Harvey Beaks)

as Greninja in Nickelodeon Smash Bros

Score: +1

Pete the Cat (Disney)

as Wario in Disney Smash Bros

Score: +1

The Horned King

as Ganondorf in Disney Smash Bros

Score: +1

Merida

as Princess Daisy in Disney Smash Bros

Score: +1

Donkey Kong

as Dr. Tyler Rockwell in Teenage Mutant Ninja Plumbers

Score: +1

Tom Kenny

as Professor E. Gadd in Super Mario Bros Movie Series

Score: +1

Tom Kenny

as Yoshi in The New Super Mario Bros. Show

Score: +1

Tom Kenny

as Fawful in Super Mario Bros Movie Series

Score: 0

Tom Kenny

as E Gadd in The Super Mario Bros Movie Trilogy/Series

Score: +1

Steve Buscemi

as Waluigi in The Super Mario Bros Movie Trilogy/Series

Score: +2

Flula Borg

as Ludwig in The Super Mario Bros Movie Trilogy/Series

Score: +1

Tara Strong

as Wendy in The Super Mario Bros Movie Trilogy/Series

Score: +1

Grey DeLisle

as Toadette in The Super Mario Bros Movie 2

Score: +1