Schillinger's schemes and encouraging him to do whatever he needs to do to maintain the power of the Brotherhood. He also participates in Oz's boxing tournament, as the Aryans' representative. He faced Cyril O'Reily, but unbeknownst to him, Cyril's older brother Ryan had spiked Robson's drinking water with chloral hydrate (stolen and smuggled from the prison hospital) to make sure Cyril wouldn't lose. Robson, incapacitated by the drug, loses the fight. Season 4 For the first half of the season, Robson is mainly seen as a supporter of Schillinger and the rest of his Aryan brothers, aiding in whatever plot he could. In the latter half, however, he slowly evolves into a more significant character. When Schillinger begins to spend more time with Christian leader Jeremiah Cloutier, Robson temporarily runs the Aryan Brotherhood's business, gradually becoming disillusioned with his former mentor. He is thrown into The Hole after getting in a fight over a joke that the Muslims overheard. Robson blames Muslim leader Kareem Said, and forms an alliance with black inmate Leroy Tidd, who also hated Said for killing his friend, Simon Adebisi. The two plot to kill Said. Tidd pretends to convert to Islam to get close to Said. However, when Tidd's conversion becomes genuine, he pulls out of the plan. Robson then bullies a younger inmate named Carl Jenkins into killing Said by promising to initiate him into the Brotherhood, as well as threatening to sell him as a sex slave (i.e. a prag) to the black inmates if he fails. Jenkins kills Tidd instead when Tidd protects Said, and is thrown into solitary confinement. Cloutier, on Said's behalf, approaches Jenkins and convinces him to give up Robson as the man who ordered the murder. Jenkins does so, but later commits suicide for fear of the Aryans' retaliation. Since prison authorities have no testimony against Robson; he is released from solitary and cleared of the charge. He then enrages Said by taunting him about the deaths of Tidd and Jenkins. Said beats Robson unconscious, further escalating the war between the Aryans and the Muslims. By this time, Schillinger has resumed running the Brotherhood, much to Robson's relief. The war worsens when the Muslims protect Beecher, Schillinger's longtime enemy, when he comes up for parole. When Robson and Schillinger taunt Beecher for losing his parole, Said shanks both of them. They both end up in the hospital with