The Athiarchists are an American two-piece, hardcore, thrash metal band from Eugene, Oregon, United States.

They are most well known for poaching shows wherever they want,[3] which first began with the purchase of a generator they used to play shows in the parking lots of events they wanted to play, including dates of the Mayhem Festival along the West Coast since its beginning in 2008.

Loaded up with a 12,500-watt generator, full PA, stage, lighting, gear storage, and sleeping bunks, they played the parking lots and entry lines of many clubs, and festivals including Warped Tour, Jägermeister Music Tour, and their most notable, Mayhem Festival 2010.

On August 10 and 11, 2010, they replaced Shadows Fall on the Jägermeister Stage due to bus failure.

On April 18, 2011, episode 4.03, they were featured on Rob Dyrdek's Fantasy Factory, titled 'The Bleeding Frogs', in which they join Rob Dyrdek and the cast of the show to create a supergroup called The Bleeding Frogs.