Theosis is a heavy metal band combining speed, melodic, and thrash metal with powerful vocals, hard-hitting double bass, and harmonized guitar riffs.
According to singer John Haskin, some gigs have been pretty strange. "We played in Hollywood at Loaded [in 2005] and a homeless lady came up to a few of us outside the venue. She asked for a cigarette and then proceeded to just rip her pants off, and no, she had nothing on underneath. Lee [Burgos, guitarist] drew a pretty accurate portrayal of that day, which at that point had been ruined."
Their full-length The Plague and the Heretic was released in October 2016 via their own label Dead Sea Records.
An album called Overture of the Damned was released in 2022, along with a a lyric video for the single "Deadlights."