Green Ghoul once attempted to take over the world. He almost sucseeded but was stopped by Hank. When in ghost jail, he was freed when Louie made a crack in the wall. He took control of Phoebe and almost killed Hank, but was foiled by Max. He battled the Thundermans and Hathaways and was defeated when Phoebe and Max combined their ice breaths.
- He is a parody of the Marvel villain, Green Goblin.