Gau raised himself in the wilds of the veldt, and it was there where he learned his amazing Rage technique. Gau can choose to use the attacks of many of the unique monsters from his world, and this skillset proves to be one of the most wide-spanning in the entire DL. Unfortunately, Gau is exactly as unpredictable as you'd expect a thirteen year old boy who lives among the animals to be. That is, he has almost no control over what he does once he Rages. His unpredictability and versatility make him an opponent that no one wants to show up against.