Gwen's feral/beast form. She only transforms into this form when her life is threatened, or she experiences extreme, traumatic anger. This is why she's mostly level headed. Though, the amount of anger she has to feel to trigger this state would be like...if someone hurt someone she cared about out of cold blood. .. Something like that.

The problem is, is that she hasn't mastered her feral side. The only time she's turned into her Guardian form, is when her ex boyfriend ripped off a large chunk of her left ear, and then tried to force himself onto her.