Mego has a purple suit, purple skin, purple hair, and a glow power which gives him the ability to shrink at will. He is the second oldest brother after Hego; he may also be older than Shego, or possibly even be her twin. His power combined with his coloration draws some comparisons to the DC Comics superhero Shrinking Violet of the Legion of Super-Heroes. His name may also be a reference to the Mego Corporation's line of 8-inch action figures. He possesses a large and easily wounded ego, and is rather defensive of his seemingly useless power. After the team reunites, he expresses a desire to be the leader. Therefore, his name could also be read as a portmanteau of Me (for his narcissism) and Ego (for his inflated egotism). Because of Mego's self-absorbed nature and easily triggered annoyance, his attitude seems to be the closest to Shego's. However, Shego still gets annoyed with Mego's inability to see past his own nose.