The Reverse Flash is a new villain in Brian Buccellato and Francis Manapul's take on The Flash, and one they're slowly revealing as they discussed in a recent interview. So slowly that Barry Allen doesn't know quite what he's dealing with yet. Hence, he's after Kid Flash.
For those not following Teen Titans, Kid Flash is Bart Allen, who may or may not be from the thirtieth century and who needs to keep his suit on in order to keep body and soul together. Of course, the Flash doesn't know this, and it's a bit of a problem considering he wants to have a chat with the kid about his symbol turning up at a crime scene. Of course, Kid Flash also has a problem: Barry's faster than he is, as this preview shows.