First post here I watched all of season one through veoh and been catching the new episodes for S2 on NBC's website (watched episode 7 on TV though a first) I still think Kensei (spelling?) is still good and in the end will sacrifice himself for the world. Of course why ever he sacrifices himself will either be A) against Sylar or B ) Something he has done that would require someone to die to fix it (for whatever reason).
No real proof or evidence to back it...just a feeling I have.
Edit: I forgot to address the immortal issue. Though he can seemingly not age and can heal I don't believe him to be immortal it would take something absolutely huge to kill him (even beyond a nuclear blast) but I think it possible.
