akikan40
It would be nice to get the ban regen, as while the riser regen is strong, it's not absolute, Since its regeneration depends on the user's mana, that of other characters like ban or Deadpool for example, do not depend on that, It is a pure immortality, a regeneration that will never run out or lose strength, Even if you get split millions of times, you would still regenerate just as fast, Unlike riser, which although it has regeneration, since it depends on its mana, it will become weaker over time, to the point where it has no effect. That's why it would be nice to get a real immortality, a passive immortality, that doesn't depend on external powers to function. It would also be nice to improve the protagonist's fire power to the point of evaporating the entire world, never going extinct, and even being able to control, steal, and absorb the flames of other living things. Something like a combination of yamamoto's bankai, Amaterasu's effect, and the absorption of a fire dragon slayer.
I disagree with the part about him being "immortal", there are many ways to kill him. Destroy the mind, destroy the soul, seal his demonic power and then kill him (remembering that his immortality depends on Demonic power), seal him, cut him using space (it doesn't hurt him but it separates his body, so it's not a wound that can heal, at least theoretically)