Oh, you mean when your character is dead. I thought you were posing some kind of koan or something.
Well, sure, if the DM is accommodating. The character could become a ghost, an undead, a soul trapped in an intelligent weapon/item, soul trying to battle/negotiate/find his wait back to the Prime, etc. The character could easily be with the old party, off on a solo jaunt, or even part of the villain's group.