Robert William Dikes, known to family as Robby, was 28 when he was last confirmed seen in Phoenix, Arizona, on September 25, 1993. He is described as 6 feet 4 inches, slender, with blond hair and hazel eyes. The last known official contact was with the Phoenix Police Department on that date; the nature of that contact has not been disclosed.

Family last heard from him three years earlier, in 1990, when he was in San Diego. The San Diego Police Department is handling the investigation, indicating significant ties to that city. There is no public information about what he was wearing that day or whether he had a vehicle. An unsubstantiated online claim says a body was found in July 1993, but that has not been confirmed by law enforcement.

If anyone knew Robby, lived near him, or saw him in Phoenix or San Diego around 1993, please share what you remember with the San Diego Police.