The 35-year-old was reported missing on Aug. 18, according to People.
He was last seen on the 1700 block of North Orange Grove Ave. in West Hollywood, California.
Strebel appeared on a number of reality programs and docu-series, including E!’s Botched and TLC’s My Strange Addiction, detailing his efforts to transform himself, physically, into Bieber, and his meticulous efforts to style his look after the pop singer.
According to reports, Strebel's friends are concerned about his well-being, saying that it is "very unusual" for him to not be in contact with his friends and family.
Anyone with information regarding Strebel's location should contact the Los Angeles Police Department at (213) 972-2976.