Kurosaki Hisoka
Name: Kurosaki Hisoka

Birthdate: 10/18/1980

Blood type: AB

Height: 5'6" (aproximatly)

Age: 16
Hisoka is, as far as I've heard, the only shinigami that you'll see that you know why he became a shinigami.  He wanted to know why he had to die the way that he did.  Being slowly killed by some funky illness isn't the best way to go.

Later on he teams up with Tsuzuki and finds out that he was murdered by Muraki.  The albino man had given him the illness after rapping him so that he could watch the young "lovely boy" die miserably.

He may not look it but Hisoka is a very kind person at heart, you just have to get close enough to him in order to see it.  I personally believe that the reason why he like Tsuzuki was because Tsuzuki was the first person to be truly kind to him and didn't expect something in return.