Jean DeWolff was was born to Celia and police commissioner Phillip DeWolff. However, Phillip had wanted a son not a daughter and when Jean was only six months old, he and his wife in the story divorced. Celia then married police officer Carl Weatherby who, unlike Phillip, loved Jean very much and inspired her to pursue a career in law enforcement. She quickly advanced through the ranks and became an NYPD captain while her step-father was still a sergeant. Though it was never shown, Carl was proud in Jean's accomplishments. She later publicly announced her support for Spider-Man as she was one of the few people in the police station who supports him.
Major Story Arcs
The Death of Jean DeWolff
While working in police force she met Sergeant Stanley Carter with whom she would have an affair that no one else had known about. Following the affair, Stan's partner was killed in the line of duty causing Stan to become insane and he sought to correct the wrongs of what he sees as a corrupt society and called himself the Sin-Eater. Stan killed Jean in her sleep because he thought that she represented the legal system that caused the death of his partner. As she bled from the chest wound cause by Stan, she reflected on her life and when the police arrived she was already dead.
After saving a friend of Aunt May from muggers, Spider-Man found out that his friend, Jean DeWolff was murdered in her sleep. He later found out from the detective who was investigating the case that the killer is someone calling himself the Sin-Eater. Attorney Matt Murdock is later legally defending the same muggers that attacked Aunt May's friend and they were released on bail. Peter was at the hearing disgusted on the verdict and Matt was visibly guilty of his own actions. He was confronted by the presiding judge, who is also his mentor and told him that he was weak. Then the Sin-Eater goes on to kill the judge and Matt couldn't do anything to defend him without revealing his superhero identity as Daredevil. Peter was also investigating and he fond out that Jean was in love with him as Spider-Man, which made her death even more painful for him. Matt was at Jean's funeral and could hear the Sin-Eater's heartbeat but dared not to speak out if it weren't for his secret identity. When the priest who oversaw the funeral of DeWolff was hearing a confession, he was killed by the person who was confessing to him, revealed to be the Sin-Eater. Spider-Man and Daredevil later team-up to track down the Sin-Eater, who is now out to kill J. Jonah Jameson.
The heroes find out that the identity of the Sin-Eater is the same detective that was investigating the murder of Jean DeWolff, Stanley Carter. The Sin-Eater entered JJJ's house to kill him but only found Betty Brant, who was watching over the house. Spider-Man managed to save Betty before she was shot. Spider-Man was so mad at the Sin-Eater that he beat him within an inch of his life and he could have killed him until Daredevil pinned him into submission. Sin-Eater was arrested and sent into jail, but he was followed by an angry mob, including Jean's father, who was ready and willing to punish him. Daredevil tried to save Sin-Eater but he was overwhelmed by the people with Spider-Man turning his back and is about to leave. It wasn't until Daredevil cried out Spider-Man's real name that he almost instinctively swung by and managed to save both Daredevil and Sin-Eater. In the rooftop, both Spider-Man and Daredevil both revealed each other's secret identities to each other and Matt even offered his legal services to Peter if he needed. This solidified the friendship between the superheroes.
During the Gauntlet story line, the Chameleon disguises himself as Jean and confronts Mysterio to introduce him to the Kravinoffs.
Jean's once friend, Captain Yuri Watanabe, later adopted the identity of the Wraith, an identity Jean's brother once held. Yuri alsoused a mask of Jean, which had been made by Mysterio, to convince the New York City criminal underworld that Jean was back from the grave to terrorize them, thus seemingly making her out to be a spirit of vengeance.
Ultimate Universe (Earth-1610)
Jean is much the same as her mainstream counterpart, but here, her moral judgment is somewhat questionable. When she first encountered Spider-Man, she told her squad to not fire at him. Spider-Man is glad that he has now an ally in the police.
Little that Spider-Man knew that Jean is working with the Kingpin. She being friendly to Peter because she was collecting information from Spider-Man and the other superheroes.
She was later killed by the Punisher because of her connections with the Kingpin. On her wake, the Kingpin was seen crying. It is implied that Jean and the Kingpin's relationship was more that mutual and they had an affair.
Marvel Noir (Earth-90214)
In Spider-Man Noir: Eyes Without a Face, as a part of Marvel Noir, Jean appears as Agent Jean De Wolfe (a male cop). He enters a club at the last minute to stop Spider-Man from being beaten to death by the Noir version of Sandman. And, he does everything within his legal power to help Spider-Man save African Americans from being tested on by Dr. Octavius (who had been working for Nazis).
- Jean Dewolff appeared in the Spider-Man 3 video game.
- She also appears in the Spectacular Spider-Man (Animated Series) as a police officer who doesn't consider Spider-Man a hero. She is voiced by Irene Bedard.