Lena Oxton, is the role of Overwatch and Heroes of the storm. Tracer's mobility is among the best in the game.Three transient displacements, a displacement of an emergency escape and high damage from double guns and bombs can make Tracer a necessary hero for the 'great gods' of the game to flaunt their operations.
She was the youngest person ever inducted into Overwatch's experimental flight program. Known for her fearless piloting skills, she was chosen as the pilot to test the prototype of "the Slipstream". But during its first flight, there is something wrong with the aircraft's teleportation matrix. It disappeared including the pilot. Lena was presumed dead.
However, she reappeared months later. She was not what she used to be yet: her molecules cannot be desynchronized from the flow of time. Suffering from "chronal disassociation," she became a living ghost, disappearing for hours and days at a time. Even present for the brief moments , she was unable to maintain physical form.
Overwatch's doctors and scientists were stumped. The Tracer's case seemed hopeless until a scientist named Winston designed the "chronal accelerator". It is a device capable of keeping Tracer anchored at the present. In addition, it gave Tracer the ability to control her own time, allowing her to speed it up or slow it down at will. With her newfound skills, she became one of the most effective agents in Overwatch .