However, series creator Tom Fontana was impressed by Rodgers, so Robson became a regular from the third season to the final episode.
In Oz, Robson acts as Vernon Schillinger's main lieutenant and is one of the most savage members of the Aryan Brotherhood.
Along with Shirley Bellinger and Moses Deyell, Robson is never housed in Emerald City, and is the only one of the three to survive the series.
During his time in the series, Robson is the main enforcer of the Aryans and takes a sadistic pleasure in committing horrific acts of violence and sexual abuse against weaker inmates.
[1] In 1997, Robson is forced to bunk with his current cellmate, Peter Vinyard, as well as Tobias Beecher and Bob Rebadow, since Emerald City had transferred all of its inmates over to his cell block after the riot that occurred at the end of the first season.
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.
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.
Robson blames Muslim leader Kareem Said, and forms an alliance with Black inmate Leroy Tidd, who also hates Said for killing his friend, Simon Adebisi.
The war is put on hold, however, when Schillinger participates in interaction sessions with Said, Beecher, and Sister Peter Marie to help prevent more violence.
Soon afterward, two new White inmates, Franklin Winthrop and Adam Guenzel, arrive in Oz to serve time for raping a college girl.
In Unit B, the Aryans save Winthrop from being raped by an overweight Black inmate named Clarence Seroy — only to keep him as their sexual slave.
The two leaders conclude that, if in fact Robson received these gums, then he is to be cast out of the gang, as he is no longer considered "pure".
Desperate to get back in, Robson buys heroin to use as an anaesthetic in an attempt to personally remove his new gums with a razorblade.
The heroin turns out to be woefully inadequate as a painkiller, with Robson being almost immediately overcome with severe pain and bringing guards to his cell with his loud screams, and he is thrown once again into solitary confinement.
In the final season of Oz, Pancamo recovers from the shank wound Robson gave him and is released from the infirmary.
After talking with Sister Pete, Robson reveals that he was raped by his father when he was six years old, and asks if it is acceptable to do "anything" to survive.
Before he goes, he thanks the support group for helping him through the trauma and says that he initially blamed Cutler for his infection, but since he committed multiple rapes without protection, he now accepts that the responsibility is his.
He is later transferred out of Oz when the prison becomes contaminated by anthrax; meanwhile, Seroy learns he has been infected with HIV after raping Robson.