His. He has the ability to absorb memories, skills and powers through skin-to-skin contact, with the longer the contact, the more he is able to retain the abilities and memories, and if long enough, the absorption becomes permanent. To counter this, he does not have a filter between those he comes into contact with and himself. Therefore, he could easily lose himself and cease to exist. 

Essential, son of Rogue 

But its not his powers I liked. Its his Bio that I created for him, his history and personality.

I didn't get a chance to play him after I created him, because the roleplay died before it could begin. So now he's just a bit of data in my computer.