Formed in 2003 in the suburbs of Tokyo, Shuu and Nii had been friends since elementary school, the earliest incarnation of the band made its first performance while the members were still in high school. Girugamesh began playing gigs with their current lineup in 2004, until they were signed to record label Gaina-Japan. Their first major single, Kaisen Sengen was ranked #10 on the Oricon Indies chart.
In 2005, Girugamesh embarked on a nation-wide tour, after which they released their first live DVD, featuring footage from the tour, and after more touring, released an EP, Goku - Shohankei Enban.
In 2007, Girugamesh was signed to the European label Gan-Shin, making them one of the select Japanese rock groups to be distributed outside of Japan. The band then was part of a 9-band Japanese rock festival in Los Angeles, California called "J-Rock Revolution". They were part of the second night alongside Merry, D'espairsRay, and Mucc. Around the time of J-Rock Revolution, many of the bands released material on iTunes, including Girugamesh, making them one of the few Japanese rock artists to be available on the popular music store.
Satoshi (左迅) – vocals, lyricist
Nii (弐) – guitar
ShuU (愁) – bass guitar
Яyo – drums, primary songwriter