He also doesn't mind declaring war on the entire world if it's for the greater good.
Anti-Hero: He fights for a good cause but he's extremely cold even to his allies and usually shows no mercy to his enemies.He never finds out that the Devil Gene came from his long dead grandmother Kazumi, meaning that he started the war for no reason and now a lot of people want him dead, which might have been part of his motive anyway since he pretty much feels that having the Devil Gene makes him too dangerous to live. All for Nothing: Started a war to lure out Azazel, the supposed originator of the Devil Gene.Kazuya and Heihachi), he'll ask you to forgive him for beating you into a bloody pulp. Apologetic Attacker: In 4 and 5, as long as you're not on his hitlist (i.e.Antagonistic Offspring: To say that he detests his evil father, Kazuya Mishima, would be putting it mildly.Later more of a Disc-One Final Boss before Azazel. The Antagonist: In Tekken 6 after his Face–Heel Turn.In Dark Resurrection, one of his custom items is a new hairstyle that looks identical to Super Saiyan Goku's hair.
Yes, he does that (accidentally) towards his own cousin, although neither are aware of how they're related to each other until 6.