Killer Be Killed began when Max and Greg ran into each other at a Los Angeles benefit show for Chi Cheng, the late Deftones bassist who spent years in a semi-conscious state following a 2008 car accident. Puciato and Cavalera were guest performers at one of the benefits put on to raise money for medical expenses. Mastodon and The Dillinger Escape Plan have toured together many times. During one such tour, in late 2012, Puciato was telling Mastodon’s Troy Sanders about the project. Before too long, Sanders and Cavalera were meeting at a festival in South America for the first time: “Hey, I’m Troy. And I think we’re in a band together.” Dave Elitch (ex-The Mars Volta) played drums on the band’s self-titled debut album.
Killer Be Killed was released in 2014 on Nuclear Blast Entertainment. The band made their live debut in Melbourne, Australia on February 21, 2015.