The Spectacular Spider-Man: Natural Selection

"Natural Selection" is the third episode of the animated television series The Spectacular Spider-Man, which is based on the comic book character Spider-Man, created by Stan Lee and Steve Ditko. In the episode, Spider-Man must face "The Lizard," who was a lab professor he was interning for until he was mutated by a serum designed to regrow his missing arm. "Natural Selection" was written by Matt Wayne, known for his work on Justice League Unlimited, and was the first time he had done so for The Spectacular Spider-Man. David Bullock directed it. "Natural Selection" originally aired on March 15, 2008, on the Kids WB! block for The CW network, and met overwhelmingly positive reviews from critics, who praise it for its action sequences, narrative direction, and the new design for Lizard.