 Due to the way he murdered his victim, Vasquez was called "the vampire killer".David Cardenas, the victim, was a 12-year-old boy who lived in his sister's residence in Alamo, Texas.On April 18, 1998, Vasquez went to a party in Donna, Texas, with his 15-year-old cousin, Andres Rafael "Andy" Chapa (born February 7, 1983).