Answer:
I have a few ideas:
If you do kill him off:
- You can kill him off, but the guy who made him immortal can change his mind and revive him.
- He could just die, and that could be the end of it.
- Alternatively, the guy who made him immortal can remove the ability without killing him.
If you don't kill him off:
- He could be shown a new purpose in life, where he can use his powers of immortality for the good of humanity.
- The immortality can be removed, but there will be a major cost, and the guy might soon regret giving up his abilities.
- You can have the guy who made him immortal, refuse to do anything about the situation.
- Or you can also make him "agree to do it" but never ends up doing it. (This can cause more interesting things to occur between, both the immortal guy and the guy who made him immortal. Such as the guy finding ways to cope with his immortality, the immortal guy loathing the guy who turned him immortal, and even the guy who made the other one immortal, promising "to make things right" even though he's not planning to keep his word.)
Hope this helps you friend :)
And if you want more ideas, hmu in comments or something.
