This article or section reveals details from the fourth season.
While investigating the events surrounding Chrissy's death, he raids the home of Dr. Sam Owens, demanding information regarding Eleven. He believes that Eleven is the cause of the destruction and wants to neutralize her. After his attempts became futile, he ordered an attack on the Byers' residence. Two agents affiliated with Hawkins Laboratory were tasked to protect the family, with one dying in the line of duty and the other being captured and tortured on Sullivan's orders.
He believes strongly in his beliefs, going to extreme lengths to find answers. Sullivan is very corrupt, hypocritical, and paranoid where he arrogantly believed Eleven to be responsible for the murder spree in Hawkins, despite her to being claimed "dead" when she was really living peacefully on the other side of the United States. Sullivan was willing to attack American citizens, including children to achieve his targets. He even inflicts torture on his fellow Americans, despite criticizing the use of torture earlier.
He is shown to have a slightly understanding side during Agent Wallace's interrogation; he considers not harming Eleven for his desired goal. However, when reaching the Nina Project facility, Sullivan ordered his men to harm Eleven and refused to listen to reason when Owens tried to explain Eleven wasn't the culprit behind the murders.
|Season Four appearances|
|Vecna's Curse||The Monster and the Superhero|
|The Nina Project||The Dive|
|The Massacre at Hawkins Lab||Papa|
Behind the scenes
His character was first revealed on November 20, 2020 via the show's official social media accounts along with several other new characters.
- Sullivan is the first non-white antagonist to be introduced.
- Official Twitter thread revealing new season 4 characters. November 20, 2020