A scarred face, a long, thin moustache, and a muscular body with large tattoos render Trejo one of the most distinctive character actors of our time.
Has two sons: Danny Boy (b. 1981) from an earlier marriage, Gilbert Trejo (b. 1988) and one daughter Danielle Trejo (b. 1990).
Trejo spent much of the 1960s in California prisons--Tracy (1963-1965), San Quentin (1965-1968), Soledad (1968-1969).
He and director Robert Rodriguez are second cousins.
His character's name in Heat (1995) was Trejo.