Effective period / Period of releases: 1985 - 2024

Members: Gene Hoglan, Brett Eriksen, Ron Rinehart, Eric Meyer (2), Mike Gonzalez, Jim Durkin, Don Doty, Rob Yahn, Jack Schwartz (2), Cris McCarthy, Laura Christine, Bob Gourley, Lee Rauch

Thrash metal band which gained notoriety for its extremely fast and lengthy songs which included numerous tempo changes and progressive song structures.

Timeline:
1981 - Formed in Downey, California (United States) as Shellshock
1992 - Disbanded
2002 - Reformed, however vocalist Ron Reinhart's health problems forced the band to disband permanently
2005 - Disbanded on indefinite hiatus
2013 - Reformed again in 2013 with the "Leave Scars" line-up.