This is the Flash (Silver Age), forensic scientist Barry Allen. The Fastest Man Alive. As superheroes go he may not be one of the most recognizable, despite having had a brief live-action television series in 1990 starring John Wesley Shipp and a new series on the horizon, but he is one that really does capture the imagination.
The main power the Flash possesses is the ability to move at super-speed, achieving faster-than-light speeds in some iterations. Like many superheroes he comes from a place of tragedy; his mother was the victim of a murder that was never solved, leading him to take up a career in forensic science. The accident which gave him his powers occurs much later. He is part of a legacy of speedsters referred to as the Flash Family including his predecessor Jay Garrick (the Golden Age Flash), his sidekick Wally West (Kid Flash/The Flash) who takes up his mantle after his (comic book) death, his grandson Bart Allen (Impulse/Kid Flash/The Flash), and a host of other speedsters.