She is an alien robot from the planet Orious called a Protector Droid. She also goes by Carli or C4. She is very optimistic, always seeing the light at the end of the tunnel and having a strong belief that no matter how bad things are, there's always a blue sky waiting. She however is very stubborn about not speaking to those she deems assholes. It also takes her a bit to trust others sometimes. And she doesn't talk to those she doesn't trust. Aside from that, she's a pretty sweet robot.