Sadus is an American thrash metal band that has carved its niche within the extreme metal scene with their trademark technical proficiency and aggressive playing style. Originally formed in 1984 in Antioch, California, the band consists of Darren Travis on vocals and guitar, Rob Moore on guitar until his departure, Steve DiGiorgio on bass, and Jon Allen on drums. They quickly earned a reputation for their furiously fast and intricate bass lines provided by DiGiorgio and were notable for being one of the few thrash metal bands to eschew the usual guitar solo heavy sounds of their contemporaries, concentrating instead on complex ensemble playing.

Their musical journey is marked by several critically acclaimed albums that showcase their thrash metal prowess blended with progressive elements. Beginning with their raw debut "Chemical Exposure" in 1988, originally titled "Illusions," Sadus established their aggressive sound. This was followed by the release of "Swallowed in Black" and "A Vision of Misery" in the early '90s, which continued to push the technical boundaries of thrash metal. Sadus took a more experimental turn with "Elements of Anger" in 1997, integrating more varied tempos and textures into their sonic palette. Though the band experienced a hiatus, they roared back into the metal consciousness with "Out For Blood" in 2006 and have continued to maintain their presence within the metal community. While not as prolific as some of their peers, Sadus has left an indelible mark on the thrash genre, recognized for their pioneering approach to extreme metal and their highly skilled musicianship. The band's name remains synonymous with technical thrash metal, and their influence is evident across numerous acts that have followed in their wake.