Pettiness is the Vice who was brought in to replace the Original Anger when he went rogue. Pettiness isn't a very intelligent demon. As a matter of fact, he's a lot more similar to an animal than a sentient being. That does not make him useless, however, because of his ability to grow into a large and more powerful version of himself, such as when he chased down Perrin. He appears to be incapable of speech. The closest thing he came to talking was when he was in his Golem body, but that was marred by the fact that his tongue made him incomprehensible.