Kurai is a cruel, cold person who's only desire is to gain power and become the Ultimate Bakugan. Despite his initial appearance as a human, Kurai, in reality, is actually a Bakugan, who took the form of a human.
Kurai is a powerful Bakugan, his Gs at 2000 Gs. However, Kurai mostly relies on the use of mechanical bakugan. These Bakugan are made based on powerful Bakugan. However, Kurai will sometimes use non-mechanical bakugan. In some cases, he himself entered the battle field. He is a rather skillfull brawler, often called "The Best Darkus Brawler".
Kurai is a cold individual when off the battle field. He is an excellent strategist, knowing the game of Bakugan inside and out. On the battle field he is a furious fighter, showing people he isn't called the Best Darkus Brawler for nothing. Overall, Kurai is an evil fighting machine that will not let anyone stand in the way of his goals for power. Nobody.