Who is Tom Keen?

Thomas Vincent Keen, (born Christopher Hargrave) is an elementary school teacher who turns out to be a covert operative. Tom was a social outcast and petty thief and doesn't know who his parents are. He was recruited at the age of 14 by The Major due to the combination of sociopathy and extreme talent, to be groomed for covert operations. Reddington acquired him from The Major in order keep an eye on Elizabeth Keen. Tom got romantically involved with Liz which led Red to fire him. To protect himself and Liz, Tom went to Berlin and the Major reassigned Tom's contract to Berlin when offered double Red's original price. Tom married Liz and they were trying to adopt a child together. Their marriage is annulled when Liz finds out who and what Tom really is. Liz shoots him and stages his death, but keeps him prisoner on a boat for several months in order to extract as much information as possible. After his escape, he goes back to work for The Major again. As a covert operation as a neo-Nazi drug and arms dealer in Germany goes south, The Major, sees Tom as a liability and tries to shoot Tom but the Germans intercept them; Tom bargains for their lives and they both manage to escape, but The Major is still set to have Tom killed. Desperate, Tom hides at Liz's place and pleads her to give him his passports. She gives them to him and Tom departs on his boat to Japan to begin his new life. He comes back to help save Liz who is on the run after murdering the Attorney General. Tom goes after Karakurt, the only person that can exonerate Liz. Tom finds Karakurt and hold him hostage until he clears Liz name. After Liz is released, Tom and Liz plan on getting married again but that didn't go as planned. Red tells Tom who his parents are and at first he doesn't want to have anything to do with them but after a while he decides to work for Scottie Hargrave in order to find out who his parents are.