Suggestions by @themegacaster

Vilgax

as “The Old Foe” in Ben 10: The Hero Returns

Spoiler

as “The Old Foe” in Ben 10: The Hero Returns

Dee Bradley Baker

as “The League” in Ben 10: The Hero Returns

Jay Baruchel

as “The League” in Ben 10: The Hero Returns

Warwick Davis

as “The League” in Ben 10: The Hero Returns

Spoiler

as “The League” in Ben 10: The Hero Returns

Nicolas Cantu

as Kevin Levin in Ben 10: The Hero Returns

Ruby Rose Turner

as Gwen Tennyson in Ben 10: The Hero Returns

Jacob Tremblay

as Cooper Daniels in Ben 10: The Hero Returns

Peyton Elizabeth Lee

as Julie Yamamoto in Ben 10: The Hero Returns

Kiawentiio

as Kai Green in Ben 10: The Hero Returns

Randy Cunningham: 9th Grade Ninja

as Next Project: in Ben 10: The Hero Returns

Man of Action

as Producer in Ben 10: The Hero Returns

Richard Schiff

as Magister Labird ❌ in Ben 10: The Hero Returns

Matt Shakman

as Director in Ben 10: The Hero Returns

Grey Matter

as Aliens in Ben 10: The Hero Returns

Upchuck

as Aliens in Ben 10: The Hero Returns

Echo Echo

as Aliens in Ben 10: The Hero Returns

Four Arms

as Aliens in Ben 10: The Hero Returns

Heatblast

as Aliens in Ben 10: The Hero Returns