20 Mind-Blowing Facts You Didn't Know About Spider-Man

14. His Greatest Enemy Got His Girlfriend Pregnant

One of the most controversial Spider-Man stories of all-time, it was revealed in Sins Pas" that Gwen Stacy had an affair with the middle-aged Norman Osborn as a teenager. She fled to Europe and had the twins in secret, but the Goblin Serum in their system would cause them to rapidly age, and they returned years later to try and kill Spider-Man after Norman successfully found and brainwashed them. The story also revealed that Peter and Gwen had never had sex, and many fans felt like it completely ruined the legacy of one of only a handful of characters who have remained dead. As a result, it's now never referred to.