Mac Gargan, a small-time crook hired by J. Jonah Jameson to follow Peter Parker and find out how he's able to get pictures of Spider-Man, strikes a deal with Jameson to eliminate Spider-Man. Gargan is taken to the lab of Dr. Farley Stillwell, where he is transformed into the supervillain Scorpion.
Guest Cast

Edward Asner
voices J. Jonah Jameson
Linda Gary
voices Aunt May
Michael Rye
voices Dr. Farley StillwellCast Appearances
Episode Discussion
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This should be preceded by episode 1. Next is "Spider Slayer-1"
Here's full originally intended release order. Page 78 - https://www.knowitalljoe.com/wp-content/uploads/2014/03/Spiderman-Animated-Series-Writers-Guide.pdf