ViPeR (バイパー) is formed in London, England by vocalist YUI.
Various unknown member changes occur.
ViPeR moves to Japan (日本)日本.
Bassist TOSHI joins.
ViPeR play their first live in Japan.
Guitarist JYUN joins.
Drummer AKIO secedes and is replaced by TAKUMI.
ViPeR joins Climb Music Entertainment.
Drummer TAKUMI secedes and is replaced by TATSUYA.
Tour, Sign of blast TOUR 2003, begins.
Tour, Set a viper free TOUR 2003, begins.
Drummer TATSUYA secedes and is replaced by YUJI.
At some point, bassist TOSHI secedes, and TAIZO begins as support bassist. HIDE (ヒデ) begins as support DJ.
viper disbands
viper was a non-vkei band in Japan. They were active from 1998 to 2007 and are now disbanded.