Suggestions by @sam2020

Alec Guinness

as Grandpa Max Tennyson in Ben 10: Race Against Time (Extended Edition)

Alec Baldwin

as Grandpa Max Tennyson in Ben 10: Race Against Time (Extended Edition)

Stephen Stanton

as Grandpa Max Tennyson in Ben 10: Race Against Time (Extended Edition)

Barry Corbin

as Grandpa Max Tennyson in Ben 10: Race Against Time (Extended Edition)

Lee Majors

as Grandpa Max Tennyson in Ben 10: Race Against Time (Extended Edition)

Paul Eiding

as Grandpa Max Tennyson in Ben 10: Race Against Time (Extended Edition)

Daryl Sabara

as Heatblast in Ben 10: Race Against Time (Extended Edition)

David Kaye

as Heatblast in Ben 10: Race Against Time (Extended Edition)

David Franklin

as Heatblast in Ben 10: Race Against Time (Extended Edition)

Steve Blum

as Heatblast in Ben 10: Race Against Time (Extended Edition)

Haley Ramm

as Gwen Tennyson in Ben 10: Race Against Time (Extended Edition)

Ashley Johnson

as Gwen Tennyson in Ben 10: Race Against Time (Extended Edition)

Meagan Smith

as Gwen Tennyson in Ben 10: Race Against Time (Extended Edition)

Beth Littleford

as Sandra Tennyson in Ben 10: Race Against Time (Extended Edition)

Tara Strong

as Sandra Tennyson in Ben 10: Race Against Time (Extended Edition)

Christien Anholt

as Young Eon in Ben 10: Race Against Time (Extended Edition)

Judd Nelson

as Eon in Ben 10: Race Against Time (Extended Edition)

Christien Anholt

as Eon in Ben 10: Race Against Time (Extended Edition)

Jake Gyllenhaal

as Eon in Ben 10: Race Against Time (Extended Edition)

Jimmy Vee

as Jawa in Star Wars Episode 1: Racer (Movie/Game)