Barry Allen is a forensic scientist for the Central City Police Department and the husband of Iris West-Allen. He is also the superhero known as The Flash, and a founding member of the Justice League.
At the end of Apokolips War, Barry disappeared into the Speed Force to create a second Flashpoint and his status is currently unknown. Due to this, Barry was responsible for resetting the timeline for the greater good as a lot of the Earth's population and most of the heroes had perished.