Suggestions by @xylopiano

David Attenborough

as King Seadoph in Klonoa: Door to Phantomile

Alison Brie

as Lolo in Klonoa: Door to Phantomile

Samuel Ramey

as Ghadius in Klonoa: Door to Phantomile

Audrey Wasilewski

as ChuChu in Kirby Recast

Mike Judge

as Klump in Donkey Kong Country (Illumination)

Bill Farmer

as Banjo in Donkey Kong Country (Illumination)

Jenna Fischer

as Francine in Samurai Pizza Cats: The Movie

Sylvester Stallone

as Al Dente in Samurai Pizza Cats: The Movie

James Hong

as Jerry Atric in Samurai Pizza Cats: The Movie

Bill Farmer

as Emperor Fred in Samurai Pizza Cats: The Movie

Brad Garrett

as Emperor Fred in Samurai Pizza Cats: The Movie

Kristen Stewart

as Polly Esther in Samurai Pizza Cats: The Movie

Jack McBrayer

as Spritz T. Cat in Samurai Pizza Cats: The Movie

Seán McLoughlin

as Meowzma O'Tool in Samurai Pizza Cats: The Movie

Robert Pattinson

as Bat Cat in Samurai Pizza Cats: The Movie

Craig Robinson

as General Catton in Samurai Pizza Cats: The Movie

Tru Valentino

as Speedy Cerviche in Samurai Pizza Cats: The Movie

Deven Mack

as Speedy Cerviche in Samurai Pizza Cats: The Movie

"Weird Al" Yankovic

as Theme Song Performer in Samurai Pizza Cats: The Movie

Kristen Schaal

as Lucille in Samurai Pizza Cats: The Movie