Harry Potter is not standing up in his crib when the Killing Curse strikes him, and the cursed scar has far more terrible consequences. But some souls will not be broken by horrible circumstance. Some people won't let the world drag them down. Strong men rise from such beginnings, and powerful gifts can be gained in terrible curses. (HP/HG, Scientist!Harry)

It is back and tweaked, Naruto given the powers and abilities of a Saiyan

Once, Thor was James Potter, New Mexico being a refinement of Odin's technique (being murdered didn't do Thor's sanity any favours). After a decade, a mostly reformed Loki restores his memories, introducing Thor's son, Harry, to new family and friends. But soon, ancient secrets emerge along with enemies both old and new as darkness rises. Harry is left with a choice: Fight or Die.