Kenpachi Zaraki

Intelligence. Personality. Roughness. He sees nothing but battle and lives to fight strong opponents. He has long, black hair like needles, gray eyes, a sharp, elongated face with a scar over his left eye, and numerous scars on his body. He is very tall and strong, hates the weak and loves battles and strong people. An ordinary boy from the slums who achieved everything solely through physical strength and bloody battles. Kenpachi had no name for a long time. He was from Zaraki, the 80th district of northern Rukongai. District 80 was the worst, most lawless district of Rukongai, full of thieves and murderers.
As a child, Kenpachi picked up a sword from the body of a dead Shinigami and imprinted his soul on it, turning it into his Zanpakutō.
One day, Kenpachi met Yachiru Unohana and fought her. It was the first fight in which he felt fear and fought with pleasure, as he was bored simply hacking at opponents who were incapable of putting up a proper fight. He subconsciously suppressed his strength to fight longer, and ultimately lost. After their fight, Kenpachi began to admire Yachiru and wanted to fight like her.
That day, Kenpachi took the name Kenpachi, given to the strongest Shinigami in each generation, the one who had killed the most enemies and won the most battles. He feels happy only when he fights.
He deliberately limits his strength and gives the enemy a head start in order to revel in the battle as long as possible.
In his opinion, pain and death are just the price one pays for the enjoyment of battle.
Despite his tendency towards cruelty, he usually stops fighting if the enemy is seriously wounded and stops resisting, claiming that he is not interested in a battle where the enemy is sure to lose.