Jerry Spiegel is an antagonist who appears in the episode Michaelangelo Meets Bugman Again of the 1987 TMNT cartoon. He created the Adventures of Bugman comics, and tries to create a TMNT comic book.
Jerry Spiegel followed the Turtles around and wrote down every move that they made, gathering as much information as possible. He also took on an alter ego identity, namely a super villain called the Swatter (basically a parody of The Shredder).
In order to secure the Turtles' cooperation, he released mutant termites into the Conspicuous Consumption Mall, demanding that they surrender to him or he will unleash the termites onto the rest of the city.
The Turtles attempted to take him on, but were caught in flypaper and subjected to intense questions about their lives and likes. He was stopped by Bugman and explained that he was just doing research for his latest comic book.