Butch Cassidy Butch Cassidy Robert Leroy Parker (April 13, 1866 – November 7, 1908), better known as Butch Cassidy, was a notorious American train robber and bank robber, and the leader of a gang of criminal outlaws known as the "Wild Bunch" in the American Old West. After participating in criminal activity in the United States for more than a decade at the end of the 19th century, the pressures of being pursued by law enforcement, notably by the Pinkerton detective agency, forced Parker to flee the country with an accomplice, Harry Alonzo Longabaugh, known as the "Sundance Kid", and Longabaugh's girlfriend
Brian Cassidy of the Special Victims Unit, he lacks the emotional maturity to deal with sex crimes and the language to describe them. He views his partner, John Munch (Richard Belzer), as a mentor. Cassidy has a drunken one-night stand with fellow SVU Detective Olivia Benson (Mariska Hargitay), and expresses a desire to pursue a relationship. Benson turns him down, however, citing a policy of not having relationships with co-workers. Years later, Benson expresses regret at the way she handled the situation. This and the stress of the unit wear Cassidy down and, after an outburst in the squad room directed at