Jin Kariya

Jin Kariya's original name is Eugene Currier, but he adopts a Japanese-style name later in his life. He has a scar on his chin caused by a slash from a hollow when he was young, short white hair, long upward-curving eyebrows and bright red eyes. He is the most powerful member of the Bount group. In a flashback, it is revealed that Kariya had brown hair and brown eyes when he was a young boy. His hair color and eye color changed when he first merged with his doll. When first introduced, Kariya's goal was to acquire massive numbers of living spirits to increase the power of himself and his followers, most notably through the summoning of the bitto.

The techniques used had a 50% chance of ripping open the barrier between the mortal world and Hueco Mundo. This initial plan, however, has been revealed as merely a means to an end. His ultimate goal is not simply to increase his power, but rather to invade and overthrow Soul Society. To accomplish that, Kariya has obtained a device (Jōkaishō) from the Shinigami Research Institute which he claimed would allow him to obliterate Seireitei. However this could also be a means to end his eternal existence. Kariya seems to be very knowledgeable and intelligent as he has great knowledge of Soul Society. He knew who Byakuya Kuchiki, Rukia Kuchiki and Ichigo Kurosaki were before even meeting them.

He was aware of the Four Great Noble Houses of Soul Society, and knew of existence of the Jōkaishō in the Shinigami Research Institute in Seireitei. He is also able to speak both German and Japanese. Kariya is revealed to have no emotional attachment to any of his subordinates, as he mentions that he sees them only as pawns to achieve his own ends. Kariya was first created by an experimental error which occurred in Seireitei. Later, in the Bounts' Cave in the real world, he was saved by Rantao from the shinigami who were trying to eliminate the Bounts. Right before Rantao told him to run away while she deals with the shinigami, Rantao gave Kariya his Doll, Messer ("knife", in German).