Lilian here is a character I'm playing in a Necessary Evil campaign. Premise is a bunch of super villains team up to fight the aliens that have destroyed all the heroes and taken over the world, so that then THEY can get back to taking over the world themselves. It's a temporary alliance of necessity. Lilian is a master of bio-engineering, pioneering many super-soldier serums and pursuing the ability to restore extinct species via DNA reconstruction. She also has a huge ecological chip on her shoulder, believing that humanity has largely screwed over the world. So, how best to fix that problem? Get rid of the humans, of course! But not by destroying them, rather inducing a forced evolution to "enhance" them and bring them back in sync with the natural order. Whether the humans want it or not.
Not being one to shy from questionable experiments, Lily used herself to perfect her evolution serum, thus her rather saurian appearance. It's fun playing a character who is both intelligent as well as super-humanly strong. She makes quite a terror on the battlefield when she's tearing out jugulars!