Mortalgax is the head of E.G.O. (Evil Geniuses Organization). He appears in Lilo & Stitch: The Series.
Mortalgax loves being evil and tries hard to act like it. He appears to be strict, but also very fair and willing give others a chance. Mortalgax takes evil very seriously and always to see details. He loves his evil laugh complete with lighting background.
Role in the series
Mortalgax is first seen complementing Jumba on his experiment work via computer screen. At first, Jumba is pleased, but then Mortalgax reveals they been getting reports of his experiments are not acting evil. He says they can't risk the scandal if Jumba has gone good so he'll have revoke his membership. Jumba tries to get him to reconsider, but Mortalgax refuses. Then Lilo comes in and stands up for Jumba and Mortalgax assumes she's his evil assistant, but Lilo say that it's Stitch. Mortalgax says he's Jumba's quadrant next Tuesday visiting his Aunt Bootsie and offers a deal. If Jumba can convince him personally that's he's still evil, he'll extend Jumba's membership and Lilo agrees to his deal.
When Mortalgax arrives at the Pelekai residence, Lilo and Stitch try to trick him into thinking that Jumba was still evil by showcasing several of his evil experiments. Lilo and Stitch's facade is successful at first until Mortalgax notices a screen of Experiment 262 (Ace) rescuing a neighbor's cat from a house that was on fire. As a result, Mortalgax revokes Jumba's membership and promptly leaves.