Marcelo Javier Onorato was 21 when he disappeared while visiting Toronto from Argentina in March 1989. He was last seen on either March 6 or March 7, days before a scheduled return flight to Argentina on March 12 that he never boarded. At the time he was described as white/Caucasian, about 5 feet 7 inches and 161 pounds, with brown eyes and wavy shoulder-length brown hair with a reddish tint. He was wearing a brown coat when last seen.

Why Marcelo did not make his flight and what happened during the days before his scheduled departure remain unknown. The Toronto Police Service Missing Persons Unit has been involved but no definitive answers have emerged, and his absence was reportedly out of character. If anyone saw Marcelo in Toronto in early March 1989 or has information about his movements, please come forward.