Non anime immortals that you might include.... 

	Anybody from Highlander....
	Any vampire... (basically immortal)
	Casca - The Eternal Mercenary... (very good literary creation by Barry
Sadler, based on the story of the Roman soldier cursed by Christ, kinda
like the wandering jew but different)
	Wolverine, from X-Men... ( I am convinced that man is immortal )

Time travellers

	Cable, from X-Men
	
Anime 

	Happosai seems to be real freaking old and nothing seems to be able to
kill him....

Sweet water and light laughter

Ray "The Texas Ryoga"