- Butt-Monkey: Every member except Timmy Kirk.
- Corrupt Church: Subverted; the vast majority have questionable morals, but are led by Cloutier, who is unquestionably a good man underneath his sense of entitlement.
- Covert Pervert: Despite their saintly veneer, nearly all of the Christians are sex offenders, save for Cloutier and Gougeon.
- Death Seeker: Probably not intentionally, but they tend to have a disregard for their own lives that can only be called suicidal.
- Everybody's Dead, Dave: At the end of the series, only two Christians are confirmed to still be alive; Samuel Gougeon and Harden.
- Goldfish Poop Gang: Even less violent than the Muslims and considered the weakest of all the gangs.
- Holier Than Thou: A largely unjustified attitude, given most of their crimes.
- Hypocrite: Most take a strong stance on sexual immorality and violence despite being populated mostly by sex offenders and murderers.
- Non-Action Guy: They never participate in the boxing tournament, the only gang not to do so.
- Lethal Joke Character: Timmy Kirk upon joining the Christians. He's the only member to actually kill other inmates, and is the most violent of them all. William Cudney is a close second in this regard, as he is a psychopathic and fanatical child murderer, but never gets to kill anyone on the inside.
- Light Is Not Good: Despite their saintly appearance, they are one of the most psycho of all the gangs. Most of their members are guilty of the worst crimes, generally sex crimes and violent crimes against children, and the creepiest thing of them all is that most have no sense of self-preservation. At all.
- Pedophile Priest: Robert Sippel. The gang as a whole could be considered the layman equivalent of this.
- Token Good Teammate: Jeremiah Cloutier and Samuel Gougeon are the only ones in the Christians who are not child murderers or rapists. Jonathan Coushaine has elements of this, seeing as he is a kindly and calm man with no violent tendencies whatsoever, but he is implied to be a sex offender of some kind.
- Would Hurt a Child: All but two are either child murderers or sexual perverts of all kinds, including pedophiles.
Rev. Jeremiah Cloutier
A charismatic TV evangelist caught embezzling from the church.
- And I Must Scream: Is sealed behind a wall by Timmy Kirk. Twice.
- Anti-Villain: He's your standard sleazy televangelist, at least at first. But he does good work with the other inmates.
- The Atoner: Trying to make up for embezzling money from his church.
- Badass Beard: How do you make Luke Perry fit in with a bunch of prisoners in a maximum security facility? Given him a beard that covers his entire face, of course.
- Butt-Monkey: Once he gets on the bad side of Timmy Kirk.
- Doing In the Wizard: His mystical, unexplained disappearance from the hospital in Season 5 was actually the bikers finishing the exact same job they started, sealing him back inside a wall to die
- Egocentrically Religious: Admits to Father Mukada that he's been like that most of his life, having performed his first miracle at a very young age. In fact, it's why he commits his crime: he thought he was entitled to the money. Fortunately, he seems to outgrow it during his time in Oz.
- Fate Worse than Death: Exploited. When Luke Perry first joined the show, everyone was assuming that he would be subjected to a prison rape storyline for maximum shock value. What his character got was so gruesome and grotesque, that being raped would have been a kinder fate for the character.
- Good Shepherd: He's a much better minister in Oz than he ever was on the outside. His greatest achievement by far is getting Vern Schillinger the closest he ever gets to a HeelFace Turn.
- Redemption Equals Death: Immediately after he resolves to become a better minister by working alongside his congregation as an equal he is sealed behind a wall by Kirk and Hoyt. This doesn't kill him, but does lead to a series of events that eventually lead to his death.
- The Rival: To Mukada, but they eventually put their differences behind them and become friends.
A psychotic and fanatical Christian inmate.
- Asshole Victim: Absolutely no one cares when he is found in bed with his neck slashed.
- Cold Sniper: How he killed his victim.
- Even Evil Has Standards: O'Reily is sickened by him.
- Holier Than Thou: Of all the Christians, he is by far the most obnoxiously self-righteous.
- Hypocrite: He's supposedly opposed to abortion because he considers it the murder of children. This from a remorseless child killer.
- Knight Templar: He's a hero in his own mind for evening the score with his wife's doctor. No one else agrees.
- Jerkass: Doesn't even begin to describe him. He is a repulsive Holier Than Thou hypocrite who revels in the fact that he shot a child dead.
- Moral Myopia: He takes his holier-than-thou attitude much farther than the other Christian inmates, lecturing the O'Reilly brothers on the immorality of violence and theft with a straight face in spite of the fact that he's a murderer. Not to mention he's outright proud of having shot a child in cold blood.
- Revenge by Proxy: He killed the child of the doctor who performed his wife's abortion, so in his mind he's 'paying him back'.
- The Sociopath: Guns down a child without even blinking and gloats about it to O'Reily.
- Truth in Television: Like Malcolm Coyle he is proof that Child Killers do not last very long in maximum security prisons.
- Too Dumb to Live: He decides to brag about shooting a kid in a maximum security prison. Ironically, however, that's not what kills him. What kills him is betraying Ryan O'Reily to his face, which was an even stupider decision to make.
- Would Hurt a Child: Kill one, actually.
A kind-hearted and benign Christian inmate imprisoned after a fatal hunting accident.
- Keet: A milder version of this trope, keeps a relatively optimistic demeanor despite his surroundings and is a very devout Christian.
- Megane: A kind, klutzy, and somewhat adorable version. Essentially he's a male equivalent of a Meganekko.
- Nice Guy: Arguably one of the kindest inmates in Oz.
- Nerd Glasses
- Token Good Teammate: One of only two Christian inmates who is not a sex offender or child murderer, and the only one who is confirmed to have survived the series. In a show where Anyone Can Die, doubly so for good-natured characters, that's pretty amazing for a minor to mid-tier character.
A guilt-ridden ex-priest and child molestor.
- The Atoner: He turned himself in, and continues to feel deep guilt about his crime even after his time is up.
- Pedophile Priest: He molested a young boy.
- Too Dumb to Live: Why would a child molester willingly come back to HIS OLD CELL just for a place to sleep? Sure enough, the Aryans crucify him on the gym floor just hours later.
An easy-going Christian inmate and initial leader of the Christians. Was once a high school teacher and as a result, teaches the GED classes in OZ.
- Affably Evil: He's never much of a plotter or schemer, and is easy to get along with.
- Chuck Cunningham Syndrome: Disappears without explanation in Season 3.
- Nice Guy: You need to be to teach the bastards imprisoned in Oz.
- Noodle Incident: It's never revealed how he entered OZ, but it's implied he may be a sex offender.
- Put on a Bus: After the graduation of the GED class, he just sort of disappears.
One of the more mysterious Christian inmates, often seen in the flock of William Cudney and Jeremiah Cloutier. When Timmy Kirk becomes head of the Christians, Harden acts as one of Kirk's mooks. One of only two Christian inmates to survive the end of the series.
- Bit Part Bad Guy
- Chekhov's Gunman: Helps Augustus Hill bring down Supreme Allah
- Elite Mook: Acts as this to Timmy Kirk
- Flat Character: Harden is a Christian inmate who is quiet, obedient to whoever is in charge of the Christians, and often appears in the background. That's really it.
- Noodle Incident: It is never revealed how he got into Oz.