The Fallen Hero (A Marvel/Hadrian Hames Potter Crossover FF)

When heroes die, they turn to stars, so it was told, and so it seemed for millennia on.
However, Truth is, that not the Heroes become Stars, but the ones that represent Celestials and do a good job in that: Even if your Celestial was Mayhem, when u were good at doing just that, you became a Star.
And Hadrian James Potter 'the Dark' was the Master and Harbinger of Death, unwillingly, a dark Heroine, a Monster that saved many and eliminated many until he was betrayed by his very Lover self.
Tragic so it was, for Hadrian did his best to always do the right, to protect the innocent, but it was not enough in the eyes of those he adored, so he was killed in their greed, and Death turned him into a dark star to rest next to the Moon for eternity. However, as many millennia later someone managed to trick Death horrifically, Potter fell from the black sky back upon earth to walk once more within the Living, unable to die ever again, for Stars are immortal:
And he was born, the Celestial of Vengeance.
How will he cope with the world that had changed with the rippling waves of time?