Charles Michael "Charlie" Adler (born February 20, 1956) is an American voice actor who played Mojo, Captain Gruber, and one of the Reavers on Wolverine and the X-Men; and Doctor Doom, Doombot, Wrecker, Melter, Sabretooth, Captain Britain, Super-Skrull, Professor Doom, Cynthia Von Doom, and a construction worker on The Super Hero Squad Show.