Canon: Avatar: The Last Airbender
Villain/Antag/Monster: Firelord Ozai
Type: OH WE ARE DEFINITELY THINKING BOSS ANTAGONIST
Description: Chronicled in all his repulsive glory at the Avatar Wiki
Notes/Adjustments: Well, he certainly feels Boss-er if he's at Sozin's Comet levels
Will it exist after the event? Lord no, isn't a limited dose enough?
Questions/Other: Deranged cackling and lightning sounds