A hero is defined by their villains, and the world of superhero comic books is filled with some of the scariest and silliest bad guys around. Rogues’ Gallery aims to settle the score and determine who is the true arch-nemesis for some of favorite superheroes, and we need your help to do it!

The Flash's villains aren't as scary as Batman's or as personal as Spider-Man's, but they are a collection of some of the strangest villains associated with any character in comics. Yet the question remains, which Flash villain can be considered his arch-nemesis?

Your mind may immediately go to the Reverse Flash, but which one? Eobard Thawne killed Barry Allen's wife and drove the hero to murder, but Hunter Zolomon got under Wally West's skin like no other villain, and caused his wife to miscarry with a click of his fingers.

Then there's the aptly named Rogues, led by Captain Cold; they represent the blue-collar villain striking out and making a living for themselves. They have a strict code of conduct, and unlike many villains they try not to make things personal in their conflict with The Flash, but few villains have caused him as much grief over the years.

And how about Grodd? He's a giant despotic gorilla with psychic powers; that's got to count for something. The Black Flash represents death for all speedsters, and who is a greater enemy to all of mankind than death itself? Or maybe you want to go a bit more obscure and select Cobalt Blue, whose rivalry with the Allen family lasted for one thousand years!

Let us know who you think gets the top spot for The Flash’s number one nemesis below, and we’ll be back in a few weeks with a countdown of his top ten best and baddest villains. You can vote for up to three selections in the poll!