His crowning achievement of evil was the near-fatal beating of the Black Cat (Spider-Man's then-partner) which led to Spider-Man beating Doctor Octopus to within an inch of his life. The trauma of the beating he received from Spider-Man left Otto Octavius afraid of Spider-Man and spiders in general for years, and he needed to be treated for his acute arachnophobia. Spider-Man was forced to let his nemesis beat him in combat so as to allow Octavius to break free of his fears and recruit him to save New York City from an exploding nuclear reactor; Octavius had been planning to detonate the reactor to kill Spider-Man indirectly, but after his out-of-control arms beat Spider-Man seemingly senseless, Spider-Man persuaded him to shut down the reactor to ensure that there were witnesses to his 'great triumph'. Octavius decided to let Spider-Man live on the grounds that he would now have to cope with the same humiliation he had endured.