Brian Robert Giron, 37 and known to some as Semas, was last seen in the late summer of 2013 after attending a boxing match in Bensenville, Illinois. Family stress over his disappearance grew because, while he had a history of short absences, this time he did not return or make contact. The Bensenville Police Department opened an investigation; the missing-person case was formally created on April 28, 2018.

At the time he vanished Brian was described as Hispanic/Latino and White/Caucasian, with Guatemalan, Bohemian and British heritage. He was between 5 feet 10 inches and 6 feet tall, with a heavy build of about 270 to 280 pounds, brown eyes, glasses and brown facial hair. He was last seen wearing a plaid short-sleeve shirt, brown/yellow/tan shorts and a hat. Identifying marks include a burn scar on the bottom of his right foot and a scar running from wrist to elbow on one arm.

If anyone saw Brian at the boxing match or afterward, or has information about his whereabouts, please come forward.