Skull has seen Fear Factory 2 times.

Fear Factory is an American industrial/groove metal band from Los Angeles that formed in 1989. Over the course of their career they have evolved from a succession of styles, combining death metal, groove metal, with industrial metal. Fear Factory proved to be enormously influential on the metal scene in the mid- to late-1990s. The band disbanded in March 2002 following some internal disputes, but reformed later in 2002 without founding member Dino Cazares...