Rae, Zims bootlicker.

So basically my fan character, who doesn't normally wear an Irken outfit just btw, was originally with a master who didn't treat her well, looked human-like just like his past minion, however he was some sort of sick minded freak who would make her do unspeakable things to his "patients" such as torturing, which turned this demon girl into a monster. However her obedience changes her into a less psychotic but more of a psychologically damaged kind of girl. She can obviously still conjure up some sort of damage to a planet hence why Zim would save her along with the fact that her old master had tried stealing his planet job from him.