Gian Davila is better known as Obscure Manifesto, drummer in American black metallers Bloodthrone.
Between 2001-2003 Davila played with US metal band Engorge (not to be mistaken with the similar named Dutch death metallers). Gian Davila joined the band after Douglas Maxwell left.
Previously he played in Necrosis, using the moniker of Zephon.
In 2004 Gian Davila was session drummer for New York-based black metal band Ash, recording the drum parts on their debut album, "Boneyard".