13. Godspeed

Oh look, a new one! I really wanted to throw a newer villain on this list, but for the five years or so of the New 52, we really didn't get any great new Flash villains. Turbine and Mob Rule are ehh, the new Reverse Flash is unnecessary…but with Rebirth, we got a really solid new foe for the Scarlet Speedster.

Meet Godspeed. He's a superfast serial killer. MAJOR SPOILERS FOR THE FIRST ARC OF THE FLASH AFTER REBIRTH AHEAD. Okay, there we go. Because "Who is Godspeed?" is the big mystery of the first arc and I don't wanna ruin the answer without a warning. But it's Detective August Heart.

Heart's brother was murdered, leaving him with a desire for vengeance rather than justice. When he was given super speed by the Speed Force Storm, he took a role as The Flash's new partner"¦until it was revealed he was also meting out street justice as the masked murderer Godspeed.

Flash fought him and locked him in Iron Heights, but his future remains unseen.

12. Inertia

Hey! Lookatthat! A Bart Allen foe! Not too many of those! But this little bastard sure counts.

Inertia was a clone of Bart, who faced him during Bart's time as Impulse, taking on a suitably inverted name as Inertia. Following Infinite Crisis, Inertia was disconnected from the speed force for a time, forcing him to use Velocity 9 to give himself artificial speed. Get it? A drug that is notable for "speed". Anyway, around this time, Bart Allen became the Flash and Inertia started planning. Inertia tricked The Rogues into killing Bart, while attempting to steal his speed for himself.

Wally West froze the punk in a horribly frozen state for years, until he eventually broke himself out. When he did, he found Hunter Zolomon (Zoom) and manipulated him into restoring Inertia's connection to natural super speed. Calling himself Kid Zoom, the punk kid was pretty immediately killed by the Rogues in revenge for tricking them.

A fitting end to a piece of garbage.