Green Goblin

Green Goblin (performed by Willem Dafoe, and voiced Neil Ross in the animated version) is the main antagonist of Spider-Man. He was once a scientist named Norman Osborne, who created the special gas to enhance a persdon's strength, the only downside, was that it caused him to go insane, and thus dawned the mantal of a childhood fear of his dreams, and became The Green Goblin, this also inspired a villain ally, another Goblin called, The Hobgoblin.

Trivia

 * The Green Goblin will become Aaron's enemy in Aaron Meets Spider-Man.
 * The Green Goblin will become Arik's enemy in Arik Meets Spider-Man.