Somebody I used to know (Chaz's needs)

Chaz's needs are extremely open ended. Basically Chaz had his mind wiped after saying he wanted to join the X-Men. He was then sold into, or more likely given to, a mad scientist and made into a zombie. He has a tattoo on his chest of a rose with an 'X' behind it and the name 'Tiff'. Is this a lover, a sister, a daughter? He also had an entire group of friends, mostly street kids, whom he was following to Jean Grey's. I'm looking for anything really. Anyone who can give him a sense of who he used to be.