Megadeth performed on Jimmy Kimmel Live last night - in costumes! Check out Dave "Frankenstein" Mustaine, a werewolf David Ellefson, Phantom of the Opera Chris Broderick and vampire Shawn Drover cranking through "Public Enemy No. 1" and "Symphony of Destruction" live!

Megadeth's TH1RT3EN is in stores today! Click here to download on iTunes, or head to your local Best Buy. Exclusively at select independent record stores, pick up TH1RT3EN and get a limited edition collector's card featuring facts from the band and exclusive imagery.  Collect them all