Royal Harbor (born May 12, 1975), known by stage name Knoc-turn'al, is a songwriter and rapper. After penning several songs for Dr. Dre, Knoc-Turn'al traded the pen for the microphone. As with most of the artists who begin their career with Dre, Knoc began his performing career in grand fashion: following a few guest raps on Chronic 2001 (1999), he made a big slash with "Bad Intentions," a Dre collaboration featured on the Wash soundtrack (2001), and then came "The Knoc," again featuring Dre but this time with Missy Elliott on the hook.