Well, think of it this way, your school has rules, right? Like, you can’t draw on the walls. Well, your daddy went to Germany and drew on the walls with Captain America. And that was a violation of Article 16, Paragraph Three of the Sokovia Accords.
~ Jimmy Woo to Cassie Lang.
There is no time for you to diminish your colleagues when you're about to start a war you can't win.
~ Jimmy Woo to Tyler Hayward.
Agent James E. "Jimmy" Woo is a fictional character and minor protagonist in the Marvel Cinematic Universe. He was a mentioned character in Agents of S.H.I.E.L.D., a major antagonist in Ant-Man and the Wasp, and a supporting protagonist in Wandavision.
He is a former S.H.I.E.L.D. agent before being recruited into the FBI. Woo was assigned as Scott Lang's parole officer, making sure he stayed under house arrest. Directly after the Blip, Woo was involved in a missing persons case at Westview, New Jersey, only to later work alongside S.W.O.R.D. as a federal liaison when the town's population mysteriously disappeared under strange circumstances.
James E. "Jimmy" Woo was born on April 12th, 1976 to unnamed parents, and grew up in Bakersfield, California where he idolized Eliot Ness and federal agencies. Jimmy would go on to become an agent of S.H.I.E.L.D., a secret intelligence agency formed to stop international threats and terrorism. During his early tenure in S.H.I.E.L.D., he worked with fellow agent Melinda May, who recognized his skills and had him be one of her contacts in case she needed his assistance. Before the events of Infinity War, Woo left S.H.I.E.L.D. for unknown reasons and was recruited into the FBI. The federal agency stationed him in San Francisco where he headed his own units, but Jimmy felt unfit due to not having many successful missions.
Ant-Man and the Wasp
The FBI tasked Woo with supervising Scott Lang during his house arrest, who was the superhero "Ant-Man" and had escaped from the Raft after breaking the law of the Sokovia Accords.
While also watching over Lang to make sure he didn't break his house arrest, the FBI also assigned Jimmy with leading the search on Hank Pym and Hope van Dyne since they were complicit in his crimes. When receiving information on Pym and Dyne after they were seen at Berkley University, Woo and his unit spoke with Dr. Bill Foster, who lied that the hadn't seen Hank in years.
Hank and Hope would later be arrested, but Woo learned that Scott had broken his violation and attempted to arrest him as well. When confronting Scott, he realized that he had been duped, seeing the Ant-Man suit shrink and finding it empty. Returning to the Lang residence, Woo found Scott there, and seeing that he didn't break his deal, ordered one of his colleagues to remove the ankle monitor.
Infinity War and Endgame
It's unknown if Woo was among the many victims of the snap, but if he was, he was turned to dust along with half of the universe. He would eventually be resurrected by the Hulk in 2023 after the Avengers undid the snap with Infinity Stones from different points of time, being able to do so with Hank Pym's particles to time travel. The Avengers then defeated the mad titan Thanos, with Iron Man sacrificing himself to stop him and his army.
After the Battle of Earth, Woo went on to investigate a missing person from witness protection, and learned that the associates of the missing person didn't know who they were. Becoming suspicious, Woo traveled to Westview, New Jersey and was confused when the officers of Westview stated it didn't exist, and so he called in S.W.O.R.D. to assist him.