Mortlegax is the head of E.G.O. (Evil Geniuses Organization). He appears in Lilo & Stitch: The Series.


Mortlegax 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. Mortlegax takes evil very seriously and always has to see details. He loves his evil laugh, complete with background thunder and lightning.


Mortlegax is first seen complementing Jumba on his experiment work via computer screen. At first, Jumba is pleased, but then Mortlegax 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 will have to revoke his membership. Jumba tries to get him to reconsider, but Mortlegax refuses. Lilo then intervenes by standing up for Jumba, and Mortlegax assumes that she is his evil assistant, but Lilo points out that it's actually Stitch. Mortlegax says that he is in Jumba's quadrant next Tuesday visiting his Aunt Bootsie and offers a deal. If Jumba can convince him personally that he is still evil, he will extend Jumba's membership, and Lilo agrees to his deal.

When Mortlegax 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 on the Internet. Lilo and Stitch's facade is successful at first until Mortlegax notices a screen of Experiment 262 (Ace) rescuing a neighbor's cat from a house that was on fire. As a result, Mortlegax revokes Jumba's membership and promptly leaves.

Main Characters: Lilo Pelekai | Stitch | Nani Pelekai | Jumba Jookiba | Pleakley | David Kawena | Captain Gantu | Dr. Hämsterviel | Reuben | Grand Councilwoman | Galactic Armada Pilots | UGF Troopers | Cobra Bubbles

Lilo & Stitch Characters: Mertle Edmonds | Elena | Teresa | Yuki | Moses Puloki | Mrs. Hasagawa | Mr. and Mrs. Pelekai | Susan Hegarty | Ice Cream Man | Mr. Wong | Mrs. Edmonds | Aunt Stacy | Officer Kahiko | Luki | Keoni Jameson | Mr. Jameson | Victoria | Mrs. Pleakley | Pixley Pleakley | Bertley Pleakley | Charles and Mary | Mitzi Suzuki and Kato Stewart | Merwin Finklestein and Dean | Ellen and Lona | Kinsey McKelly | Ringmaster | Mayor Anolo | Nicolé | Dr. Gladys Okra | Sara | Mr. Cooper | Chaps, Manny and Sperk | Mortlegax
Stitch! Characters: Yuna Kamihara | Obaa Kamihara | Penny | Sasha | Taro | Hiroman | Jessica | Tigerlily | Kenny | BooGoo | Kijimunaa | Delia | Ani Pelekai
Stitch & Ai Characters: Wang Ai Ling | Wang Jiejie | Meiying | Dahu
Video Game Characters: Dr. Habbitrale
Guest Characters: Jake Long | Luong Lao Shi | Fu Dog | Trixie Carter | Arthur Spudinski | Penny Proud | Oscar Proud | Trudy Proud | BeBe & CeCe Proud | Suga Mama Proud | Puff | Wizard Kelly | Kim Possible | Ron Stoppable | Rufus | Dr. Drakken | Shego | T.J. Detweiler | Ashley Spinelli | Mikey Blumberg | Gus | Vince LaSalle | Gretchen Grundler | Muriel Finster
Other: Pudge | Jimmy the Cockroach | Various Aliens | Uburnium | Tantalog language