Dr. Sivana was a constant nemesis of Captain Marvel up until the time when Lex Luthor, prior to the events that took place in Kingdom Come, snapped his neck, as seen in one of William's visions before he was transformed into Gog. Despite this, Lex Luthor still honored Dr. Sivana's evil ingenuity as he used gruesome violent images and worms secreting chemicals into Billy Batson's brain to control him, manipulating him into believing that all superheroes were monsters, including Captain Marvel which was part of Billy.
Dr. Sivana's likeness was used in the form of a ship resembling Brainiac's skull ship in one of the images depicting the slaughter of the entire Marvel Family during Billy Batson's torture sessions.
- Appearances of Thaddeus Sivana (Earth-22)
- 1 Images featuring Thaddeus Sivana (Earth-22)
- Quotations by or about Thaddeus Sivana (Earth-22)
- Character Gallery: Thaddeus Sivana (Earth-22)
This character is or was primarily an enemy of Captain Marvel, the Wizard Shazam, or any of the extended members of the Marvel Family. This template will categorize articles that include it into the category "Marvel Family Villains."