Sadus is a long-running metal band that straddles the line between thrash metal and death metal and are known for their highly technical playing style. Sadus was formed in 1985 in Antioch, California by high school friends Steve DiGiorgio (bass), Jon Allen (drums), Darren Travis (vocals/guitar), and Rob Moore (guitar). The band released 3 LPs between 1988 and 1992. Moore left Sadus in 1994 and the band would continue on as a trio. Sadus continued to play and record occasionally, until they went on hiatus from recording and performing in 2009. However, after officially splitting up in 2015, the band was resurrected in 2017 sans DiGiorgio. After 39 years of service to the band, Allen was fired in December 2024 due to allegations of abuse.
Steve DiGiorgio has become an in-demand bass player, playing and recording with bands like Death (2), Testament (2), Iced Earth, and many others. Both Steve and Jon have also played in Dragonlord.