Suggestions by @tylerjohnson1

Will Forte

as Grim Creeper in Ben 10: Experiment Crew

Cate Blanchett

as Revolta in Ben 10: Experiment Crew

Angelina Jolie

as Lydia Dracula in Ben 10: Experiment Crew

Emma Thompson

as Grand Councilwoman in Ben 10: Experiment Crew

Jude Law

as Lycidias Dracula in Ben 10: Experiment Crew

Jason Isaacs

as Dr. Gillman in Ben 10: Experiment Crew

John Goodman

as Ignacius Baumann in Ben 10: Experiment Crew

Brendan Fraser

as Jawg Quizby in Ben 10: Experiment Crew

Kimberly Brooks

as Jasper in Ben 10: Experiment Crew

Jennifer Paz

as Lapis Lazuli in Ben 10: Experiment Crew

Shelby Rabara

as Peridot in Ben 10: Experiment Crew

Whoopi Goldberg

as Bismuth in Ben 10: Experiment Crew

Uzo Aduba

as Bismuth in Ben 10: Experiment Crew

Miriam A. Hyman

as Bismuth in Ben 10: Experiment Crew

Tom Scharpling

as Greg Universe in Ben 10: Experiment Crew

Grace Rolek

as Connie Maheswaran in Ben 10: Experiment Crew

Deedee Magno Hall

as Pearl in Ben 10: Experiment Crew

Michaela Dietz

as Amethyst in Ben 10: Experiment Crew

Estelle

as Garnet in Ben 10: Experiment Crew

Zach Callison

as Steven Universe in Ben 10: Experiment Crew