Warbringer is an American thrash metal band formed in 2004. Century Media Records signed Warbringer after seeing them at a local show in LA. Originally, a Century Media rep was at the show to see another LA thrash metal band but decided to sign Warbringer instead. Warbringer's second album Waking into Nightmares was released on May 19, 2009. The album reached No. 14 on the Billboard Heatseekers chart. Despite numerous line-up changes, Warbringer has released six full-length studio albums, and along with Bonded by Blood, Evile, Hatchet and Havok, they are notable for being part of the late 2000s and early 2010s "thrash metal revival" scene.

Overkill is an American thrash metal band, formed in 1980 in New Jersey. They have gone through many lineup changes, leaving bassist D.D. Verni and lead vocalist Bobby "Blitz" Ellsworth as the only constant members. The band's current lineup includes Verni, Ellsworth, Dave Linsk on lead guitar, Derek Tailer on rhythm guitar and Jason Bittner on drums. Along with Nuclear Assault and Anthrax, the latter of whom would feature one-time Overkill lead guitarist Dan Spitz, the band is one of the most successful East Coast thrash metal bands, and they are often called "the Motörhead of thrash metal", based on their unique playing style, which was influenced by punk rock and the new wave of British heavy metal (NWOBHM). The band has a notable mascot named "Chaly" who has appeared on many of their album covers.