Mascumax is a one-time villain from episode Members Only. He is a sexist that views girls and women as nothing more than the property of men, just like Major Glory and the members of AWSM did earlier in the episode.
He was voiced by Clancy Brown, best known for playing another supervillain, Lex Luthor in the DC Animated Universe.
His appearance is similar to that of Dr. Robotnik (later, Dr. Eggman) from Sonic the Hedgehog
He is also similar to a Transformer, the difference being that he isn't 100% robotic.
He also resembles Exodia, the Forbidden One from Yu-Gi-Oh!