Marco Antonio Lopez was 21 when he was last seen on December 12, 1996, in South Phoenix. He told his family he was heading to a party and was seen getting into a vehicle with a friend in the area of North 19th Avenue and West Missouri Avenue; after that he vanished and was never heard from again.

At the time he went missing he was described as a Hispanic male about 5 feet 10 inches to 5 feet 11 inches tall, weighing 175 to 185 pounds, with brown hair and brown eyes. Distinguishing features include a circular scar on his left cheek and several tattoos: the letters WWC on his left shoulder and outer left forearm, and the nickname Sparky tattooed in the web of his hand or finger. He has also been known as David Angel Campos and Marco Antonio Lopez-Lopez.

The Phoenix Police Department has continued the investigation and the family submitted DNA from his sister to the University of North Texas Center for Human Identification for comparison with unidentified remains, but no definitive answers have emerged and the case is cold. If anyone knew Marco, the car he got into, or has information about that night, please come forward.