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 our favorite superheroes, and we need your help to do it!

The Legion of Super-Heroes may not get much love from DC Comics as of late, but they have some of the most eclectic and fun villains in the DC Universe. From traitorous members to millennia old mages, and the God of All Evil himself, The Legion have a sometimes surprisingly diverse rogues gallery, but who is the team's ultimate enemy?

When it comes to the Legion's enemies, the likely number one seed this week is their evil doppelgangers in the Legion of Supervilliains. Although the team has gone under numerous incarnations with its ranks swelling to rival the heroes, you just can't beat the original team of Lightning Lord, Saturn Queen and Cosmic King.

Then of course there's threats such as Computo, Universo and Mordred, plus The Fatal Five and the Time Trapper. Threats from the 21st century also often rear their head, with Lex Luthor being a particular pest in the Silver Age and Darkseid posing perhaps the team's toughest challenge during "The Great Darkness Saga"

Let us know who you think gets the top spot for The Legion’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!