Suggestions by @julianrojas1

Ian McShane

as Bowser's Brother in The Super Mario Bros. Movie 2

Brian Blessed

as King Bob-omb in The Super Mario Bros. Movie 2

Charles Martinet

as Giuseppe in The Super Mario Bros. Movie 2

Lisa Vischer

as Gia in The Super Mario Bros. Movie 2

Dan Castellaneta

as Mario & Luigi's grandfather in The Super Mario Bros. Movie 2

Erin Chambers

as Aunt Marie in The Super Mario Bros. Movie 2

John DiMaggio

as Uncle Arthur in The Super Mario Bros. Movie 2

Rino Romano

as Uncle Tony in The Super Mario Bros. Movie 2

Jessica DiCicco

as Mario & Luigi's Mother in The Super Mario Bros. Movie 2

Charles Martinet

as Mario & Luigi's Father in The Super Mario Bros. Movie 2

Bruce Campbell

as Swanky Kong in The Super Mario Bros. Movie 2

Pierre Coffin

as Hungry Luma in The Super Mario Bros. Movie 2

Khary Payton

as Penguin King in The Super Mario Bros. Movie 2

Michael Imperioli

as Boshi in The Super Mario Bros. Movie 2

Kevin Clash

as Luma in The Super Mario Bros. Movie 2

Greg Cipes

as Inkling Boy in The Super Mario Bros. Movie 2

Jimmie Wood

as Moltenio in The Super Mario Bros. Movie 2

Hyein Park

as Inkling Girl in The Super Mario Bros. Movie 2

Tress MacNeille

as Glamdozer in The Super Mario Bros. Movie 2

Jess Harnell

as Reznor Leader in The Super Mario Bros. Movie 2