Lockhart started his career as a gay pornographic film actor mostly using the stage name Brent Corrigan, except in The Velvet Mafia parts 1 and 2 (2006) and Best of Roman Heart (2008), in which he used the stage name Fox Ryder. In 2010, he left pornography to focus almost exclusively on gay-themed movies and independent films, such as Judas Kiss, Sister Mary, Another Gay Sequel: Gays Gone Wild!, Welcome to New York, and others. In 2011, he starred in the horror comedy anthology film Chillerama, directed by Tim Sullivan, as Ricky in the musical segment "I Was A Teenage Werebear".