James Johnson's mixed-marital arts background hints at the competitive fire he brings to every game.
The story goes that when the Chicago Bulls stayed at the allegedly haunted Skirvin Hotel, while they were in Oklahoma City to face the Thunder, Derrick Rose chose James Johnson as a his roommate. A Grantland article explains Johnson's qualifications as a bodyguard and enforcer.
"His [Johnson's] parents are black belts. He has eight siblings, and they are also all black belts of varying degrees. His youngest sister, about 10 years his junior, is working toward her third degree.