Iron Guts Kelly sounds like a crack squad of hardcore musicians preparing for battle, and frontman Robert "Boj" Stevens is the drill instructor, barking commands and threats. Sean Patrick Riley, Shawn Reynolds and Josh Leon back him like the most aggressive marching band ever assembled. The songs are menacing and threatening: hippies, Juggalos and junkies all come into the band's sights on Killology. Happily, though, the band inserts some levity into the proceedings, courtesy of "The Professionals," which might be the first hardcore song to sing the praises of the buffet. A sped-up, take-no-prisoners approach on the Who's "Won't Get Fooled Again" also adds a sense of optimism to an otherwise dark album.