The Marvel Productions Universe is a series of semi-connected series from the early 1980s that includes Spider-Man, Spider-Man and His Amazing Friends, and The Incredible Hulk. All three were produced by Marvel Productions. Green Goblin appeared in both Spider-Man series and featured the same changes from the comics in both, mainly that he would transform into a goblin rather than wear a costume. Cementing a tie, the later Spider-Man series' episode "The Prison Plot" used footage from "When Magneto Speaks...People Listen" as a flashback.