Seeing a character from Flash, really makes me happy for some reason. Have you watched it?
That guys is Eobard Thawne who stole the body of Harrison Wells after killing Barry Allens mother (11 years old and soon becomes the Flash) and couldn't tap into the speed force. The mission of Killing Barry Allen's mother was to keep Barry from becoming the Flash. But, because he couldn't tap into the speed force, he waited 15 years and made sure Barry had to be the Flash.