Lawrence Arnell is a rapper and singer from Philadelphia, Pennsylvania. He became known in the underground scene for his collaborations with Jedi Mind Tricks, OuterSpace, Dave Ghetto and others. He first collaborated with the JMT camp on Violent By Design under the name Diamondback in 2000. In 2014, he appeared on the Army of the Pharaohs studio albums In Death Reborn and Heavy Lies the Crown. In November 2014, Arnell and Houston rapper Zilla released a collaboration LP titled The Monster and Mr. Arnell featuring Blacastan, Des Devious, and Helen Sciandra.

Lawrence has partnered with Dave Ghetto and Philadelphia based producer Dame Anthony to create Ghetto Rock Star. L. Arnell has the type of talent that is able to span all genres of music, which allows him to bring something unexpected to a record, be it vocals, lyrics or track selection, cites Dave Ghetto.