The characters of Oz, fictional characters on the television series about prison life, are a diverse mixture of inmates from various gangs and prison staff.
The Aryans are a fierce gang. Led through the whole series by the charismatic Vernon Schillinger. They are racist, nationalist, tough and like to have what are known in the series as "Prags" (The show's term for a "Bitch"). They, and mostly Schillinger himself, take up most of the Oz rape statistic. Curiously they rarely have feuds with the Homeboys but rather with the Muslims. The Aryans were in a perpetual alliance with the Bikers, had a CO on their "payroll," and were a force to be reckoned with.
The Bikers are, for the most part, some of the toughest inmates. They are also Schillinger and the other Aryans' allies and as such, share at least some of his thoughts on race, religion, etc. Jaz Hoyt is their leader.
The Christians are perhaps the most quiet of all the groups in Oz, but they get a voice when Jeremiah Cloutier entered the fold. Cloutier converted Biker Jim Burns and got close to Vern Schillinger, but unfortunately these connections proved fatal when he banished Timmy Kirk from his congregation. Timmy Kirk was using the flock to extort and punish inmates he considered wicked, but was indeed wicked himself, and eventually turned to Satanism before finally being killed by Jaz Hoyt on his second attempt. Other notable members include William Cudney, who shot the child of a doctor who had aborted his wife's fetus, and Robert Sippel, a pedophile priest, who was eventually nailed by Schillinger and the Aryans.
The Gays are the most non-violent gang in the prison and they stick together. They do not seem to have a leader but Fiona and Ray Masters are the front figures. Despite usually being in the background, they have had some notable members. Richie Hanlon was a kind individual who was shafted by the Aryans, and Jason Cramer was the only inmate who was ever released and stayed out. Nat Ginzburg was known for killing the former Sicilian leader Antonio Nappa. Alonso Torquemada who entered late in the series, seemed the perfect leader with tons of ambition, but by then the show was declared to be over.
The Gangstas or the Homeboys are a black gang in Oz and have the most members compared to other gangs. They also however suffer the most losses, although many of them are due to internal struggles. They are the least religious group and the most drug affected.