Vio-lence is an American thrash metal band formed 1985 in San Francisco, that released a few demo tapes, one EP and 3 LPs between 1985 and 1993. After establishing a secure line-up with Phil Demmel and Robb Flynn on guitars, Dean Dell on bass, Perry Strickland on drums and Sean Killian on vocals, they released a demo tape on Mechanic Records in 1986. Soon after releasing their demo tape they entered the studio to record their debut album, called Eternal Nightmare, a seven track album released in 1988.