Steve "Zetro" Souza (born March 24, 1964) is an American vocalist, best known for his work with thrash metal band Exodus from 1986 to 1994, and again from 2002 to 2004. He rejoined Exodus for a third time in 2014. Souza is one of two singers, along with Chuck Billy, for the band Dublin Death Patrol. He also sings for the thrash metal band Tenet and was the lead singer for the thrash metal band Legacy (later known as Testament). Souza recently announced his new project, Hatriot.