Royal Harbor (born May 12, 1975), known by stage name Knoc-turn'al, is a songwriter and rapper. He recorded what would have been his debut album, entitled Knoc's Landin, but it remains unreleased. His first release was the EP L.A. Confidential presents: Knoc-turn'al.
His official debut album, The Way I Am, with only the title track being released as a single. His third is to be titled The Book of Knoc. It will be released on Equity Records. The bulk of Knoc's exposure has come in the form of feature spots, most notably on Dr. Dre's album 2001, on the tracks "Some L.A. Niggaz" and "Bang Bang", and also on the single "Bad Intentions" from The Wash also with Dr. Dre. He also performed on another track from the soundtrack called "Str8 West Coast".
In the early 90's Knoctunal recorded records and toured under the name Nature-Boy with his long time DJ and friend Gary Zee opening up for acts such as the Beastie Boys and Cypress Hill. Their first EP was reported to have sold 200,000 copies underground on the label Blunt Room Records.