Forbidden made their mark on the world of thrash just as you would expect — hard and fast. The band came roaring out of the gate in 1988 with their seminal Combat debut, Forbidden Evil, and followed it up two years later with the equally fierce, if also more techy and varied, Twisted Into Form. And while they've experienced starts and stops since (their most recent full-length was 2010's Omega Wave) Forbidden's first two albums remain primal slices of second-wave Bay Area thrash, on par with peers like Testament and Death Angel, and worthy successors to the early works of pioneers like Metallica and Exodus.