|“||I have been stabbed, shot, poisoned, frozen, hung, electrocuted, and burned...and every morning I wake up without a scratch on me, not a dent in the fender... I am an immortal.||„|
|~ Phil Connors, in "Groundhog Day"|
Heroes who can live forever that capable of eternal life/virtual invulnerability. This either means that they are completely impossible to kill, or that they have an eternal life span/powers that render them not easily killed, but it's possible to them to die if killed/their weakness inflicted.
A prominent example is Captain Jack Harkness.