Killer Be Killed, the supergroup composed of Max Cavalera (Ex-Sepultura, Soulfly, Cavalera Conspiracy), Greg Puciato (Dillinger Escape Plan), Troy Sanders (Mastodon), and apparently Juan Montoya (MonstrO) for live shows, now have an official new member in their ranks. Cavalera recently revealed that Ben Koller, who originally was a fill in for drummer Dave Elitch (ex-The…