Complex sentence: Like his film counterpart, he also takes on the role of the Green Goblin however, it does not involved Gwen Stacy's death as his boss stage is during Oscorp's second incident after he transformed into Goblin.
Split into simpler sentences: Like his film counterpart, he also takes on the role of the Green Goblin. However, it does not involved Gwen Stacy's death as his boss stage is during Oscorp's second incident after he transformed into Goblin.