Gaz is Dib’s younger, crazy, antisocial,and apathetic sister. She loves soda and is rarely seen with out a video game system in her hands. When something is thrown in the path of what she wants, she won’t hesitate to thrust it into “a nightmare world from which there is no awakening.” She also knows that Zim is an alien but thinks he’s too stupid to take over the world; so she doesn’t care. That makes her just about the smartest character in the whole series. There is also a possibility that Dib and Gaz are clones of their father and aren’t even natural humans.