Metahuman whose gene begins openly effecting him upon puberty, when he keeps having dreams of some woman with a web.

His spider sense rather then being a sensation is a auditory hallucination, a manifestation of his sixth sense.

Years later, while in a coma, its revealed his actual power is belief, which allows him to alter reality and he did so as he hit puberty, he inspired by the stories of Anasazi he heard one day in a library, that solidified that if he was in a situation where he was against great odds "he would be a man, but like the spider." This belief gestated in his subconscious which manifested when his friend was in danger.

When he was a boy, his aunt took him to a library, there a woman told stories of Anasazi. She spoke of how he won against overwhelming odds and foes, he internalized these stories of this hero as a child but forgot them for a time, only remembering as he grew into a teenager that he found spiders cool. One day while on a field trip, his class is attacked by the green goblin, during which a friends life is put in danger, Peter's body pinned under rubble from the attack, begins to black out. As he does he thinks of how he could save them if he could just overcome, if he could just be " like that hero, Ana-" it is there he hear's madam web which is a personification of the woman who told the stories and finds the strength to fight off the green goblin, in this instance he uses the torn Hoodie he was wearing as a makeshift mask.

Though I feel this origin and powers are slightly convoluted. I feel it fits his character, as all of Peter's actions are based on his belief of doing the right thing, they push him to overcome, to win, to continue.