Theodore "T.O." Osmond was a drug dealer that operated in Farmington. He started being the right-hand of Vic Mackey's protege Rondell Robinson. However, when Rondell started to lose control, T.O. started plotting to take control. Eventually, Mackey chose him as Rondell's replacement and offered T.O. protection for a fee. T.O. used his comic book store as a front for his drug dealing business.