He isn't bound to a person. I explained this a while ago. Let me try and bring back what I wrote. I can remember that I said he was unique, in the fact that he is in a way force ghost while still having a physical form, or the capability to have a physical form.
I recall during the incdent with mean on his ship that you said he can't be killed, but can be tempary sent back to.....er......wherever it was he came from if he was hit hard enough, like with the main weapon of a ship or something along those lines