No superhero has an entirely normal origin - after all, taking to the streets in spandex to fight crime has to be provoked by some pretty unusual events. But given the sheer number of superheroes that have been created over the years, it makes sense that a lot of backstories are very alike, if not basically identical in nature.
While most hero origins cover familiar ground, many brave writers choose to take the road less travelled to create something completely unique and also totally bizarre. The fact that backstories can be incredibly similar makes this all the more interesting, as an unconventional past immediately makes a character stand out - though admittedly not always for the right reasons.
That said, even the dumbest of backstories are at least somewhat redeemed by being totally one of a kind, so at the absolute worst you know you're unlikely to find that specific brand of weird anywhere else.
Be it through weird powers or the strange way they are bestowed, here are the heroes whose origin stories are not only impossible to believe, but also impossible to forget.