Kariya hates the Shinigami with a great passion due to the fact they brought about the Bount’s creation, then showed them nothing but cruelty. His hate has also grown due to the fact that like all the Bounts, he doesn’t belong in the Human World or the Soul Society. Like all Bounts, Kariya can feed on Human souls, granting him immortality and special powers. He has demonstrated an incredible amount of spiritual power and thanks to have been living for centuries, and is a master of close combat.