Suggestions by @kevindolan

Haley Joel Osment

as The Grandson in The Princess Bride (1997)

Score: +7

Eric Lloyd

as The Grandson in The Princess Bride (1997)

Score: +8

Kurt Russell

as Metro Man in Megamind (1990)

Score: +4

Timothy Stack

as Minion in Megamind (1990)

Score: +4

John Musker and Ron Clements

as Director in The Princess and the Frog (1999)

Score: +1

Delroy Lindo

as Dr. Facilier in The Princess and the Frog (1999)

Score: +3

Bernie Mac

as Louis in The Princess and the Frog (1999)

Score: +5

Della Reese

as Mama Odie in The Princess and the Frog (1999)

Score: +1

Jason Schwartzman

as Cubot in Super Mario Bros Z: the movie

Score: +1

Richard Ayoade

as Orbot in Super Mario Bros Z: the movie

Score: +1

Jim Varney

as Ray in The Princess and the Frog (1999)

Score: +3

Yong Yea

as Espio in Super Mario Bros Z: the movie

Score: +3

May Hong

as Rouge in Super Mario Bros Z: the movie

Score: +2

Michael Kovach

as Bowser Jr. in Super Mario Bros Z: the movie

Score: +2

Alex Brightman

as Zazz in Super Mario Bros Z: the movie

Score: +1

Mick Wingert

as Bowser in Super Mario Bros Z: the movie

Score: +2

Sandy Duncan

as Celia Mae in Monsters, Inc. (1991)

Score: +3

George Kennedy

as Henry J. Waternoose III in Monsters, Inc. (1991)

Score: +2

Louie Anderson

as George Sanderson in Monsters, Inc. (1991)

Score: +2

Robert Loggia

as Henry J. Waternoose III in Monsters, Inc. (1991)

Score: +2