The almighty MASTODON returns to its old stomping grounds to cap off a lineup of extreme metal mayhem. Converge and High on Fire also play blistering sets of soul-crushing riffs. But these are all paltry mortals who have been summoned to simply clear the stage for DETHKLOK, stars of Adult Swim's "Metalocalypse." Animated metal madmen William Murderface (bass), Nathan Explosion (frontman), Skwisgaar Skwigelf (lead guitar), Toki Wartooth (rhythm guitar), and Pickles (drums) will appear live, in the flesh – led by creator Brendon Small – to shred through such classic originals as "Bloodrocuted," "Murmaider," and "Hatredcopter," as well as some new cuts from their latest, Dethalbum II. $34.50. 6:30 p.m. Tabernacle, 152 Luckie St. 404-659-9022. www.livenation.com.