Xemnas was talking about sora when he fought him in KHFM and lost then that's when Xemnas met up with Roxas, Nomura said Ven is a completely new person, but i believe the theory of their being two identical ppl which Roxas had his memory erased maybe aqua was the one to do it? that's prolly what Ven is asking aqua when he asked her to "erase" him, but theories will be theories.
