Marvel Comics Spider-Man Neogenic Nightmare Chapter 14: The Final Nightmare
S2, E14: Spider-Man seeks Curt Connors' aid to help reverse the aging effects of the Vulture's talons. After absorbing Spider-Man's youth, and DNA, the Vulture mutates into the Man-Spider. The Scorpion grabs Dr. Farley Stillwell to seek a cure for his own mutation. Spider-Man eventually regains his youth, and manages to stop the Vulture and Scorpion.
