Nikki Sixx is an American musician and co-founder of Mötley Crüe. He is a founding member of the iconic 80s glam metal band Mötley Crüe. After changing his name, Sixx began honing his songwriting skills and joined various bands in Los Angeles, including Sister and London. Sixx has appeared in the documentaries It's So Easy and Other Lies and The Life, Blood and Rhythm of Randy Castillo.