He is a rebel, doing what he wants when he wants it. He's apathetic, sarcastic, and not too caring other's feelings or even his own imprisonment as in his own words, "fine with doing whatever, as long as he gets to see funny things happen to people." He often pranks the other humans, with his common victims being Ragatha and Gangle. He is a tricky, conceited and overconfident boxer. Jax (or Jackrabbit) is the great champion of Fight Club, although many speculate if he deserves it.