Origins? Well there's origins and origins.
Sure Spiderman's real name is Peter Parker but the story begins way before that.
1306 to be precise, in a cave on an Irish island.
There sat a much beleaguered Scottish King, on the run from a homeland in the process of being annexed by England.
To Robert the Bruce, with much of his country now overrun by the troops of Edward I, aka 'Longshanks', things didn't look too good.
In fact he was in two minds whether to give up the defence of his realm or carry on.
As he sat in his gloomy quandary, he espied a spider hanging on a long thread from the roof of the cave. As he watched, he could see it was trying to swing over to a rock so it could start to create its web.
Six times it swung and failed to reach the rock. Robert had suffered six defeats at the hands of the English. Suddenly it dawned on him. If the spider made it on the seventh attempt, he would carry on the fight.
Of course, the spider did make it and the rest is, quite literally, history. After many battles, he finally secured his country's independence at Bannockburn.
Unbeknownst to Robert, the Sidhe, a magical race rather like Elves or Fairies and who lived inside the hill which was home to the cave in question, observed this with great interest and regarded it to be of the utmost significance in their scheme of things
They resolved that the principal of justice which was born of this interaction between a human and a spider should be preserved somehow to aid a future generation of humanity.
So, the very next changeling child they acquired, they imbued with the potential for both the bravery and sense of injustice of the human involved and the determination and special skills of the spider.
However, they judged that there would be little point in those powers being immediately enacted at that time but would be more sensibly invoked at some future point of greater World need. Their seers, after long deliberation, judged that the moment of greatest need in the future of humanity, would be after the harnessing of nuclear power.
So it was decided, that genes would be created within the changeling which would require radioactivity to trigger the powers they held.
And so it was done. Generation after generation of descendants from that changeling child came and went until finally, in the New World, a child was born, Peter Parker, in whom those powers would come to fruition.
Incidentally, that first changeling child was called Arthur O'Pod.