"An accident, honestly. Genetic alterations don't always result in cancer turns out."

Just usually. Peter's pretty lucky in that regard. This could have gone so, so much worse than suddenly having a secret identity to keep track of while he helps deal with crime of all size in his stomping grounds.

"At first, I didn't know what was happening and it was real freaky and I tried...to just pretend I was normal. Then I remembered you all fighting off those aliens in New York and I figured you know. Maybe not on that scale I could help people too. So I made my first costume and started learning the streets and helping anyone I could find. It didn't always go as planned though..."