Half-brother of Nicholas Chapman, Zeb Chapman, Wesley Chapman, Christopher Hecht, James Chapman, Barbara Chapman, Tucker Chapman, Lyssa Chapman, Bonnie Jo Chapman and Garry Chapman. Step-brother of Cecily Chapman Barmore.
Uncle of Abbie Mae Chapman and Madalynn Grace Galanti (Lyssa's daughters), Travis Chapman (Barbara's son), and Dylan Chapman, Jodi Chapman, Jennifer Chapman, and
Jasmine Chapman (Duane Lee's children).
Chapman lost by submission to Lincoln Tyler in an MMA fight in 2000.
In 2009, Chapman defeated Sam Quell by decision in a 3-round amateur boxing match in the lightweight division (135 pounds).
Leland Chaplin trained with former boxing champion Jesus "The Hawaiian Punch" Salud
(63-13-0, 39 Knockouts).
Chapman was trained in boxing by Golden Gloves and professional boxer, Sonny Westbrook.