7Sam Raimi’s Lizard and Mysterio
Source:cbr.com
Sometimes, a superhero movie has to present minor characters which are going to have an important role later on. Sam Raimi did that with Spider-Man trilogy when Lizard and Mysterio were introduced, and they could have become major villains. Dylan Baker’s Doctor Curt Connors was presented as Peter Parker’s college professor in Spider-Man 2 and Spider-Man 3, but he never transformed into Lizard.
In the same manner, Bruce Campbell made small cameo roles, and he was going to become Mysterio in Spider-Man 4, but that has never happened.
