Septa Unella
A stern, implacable septa of the Faith Militant, tireless in her duty of penance and confession, ringing her bell and intoning her single word: shame.
A soul born at The Faith, sworn to The Faith of the Seven.
The fuller tale
Season Five
The High Sparrow's most devoted jailer, a woman who has clearly been waiting her whole life for sinners worth this much attention. Once Cersei is taken into the Faith's custody, Unella is the one at her cell door morning after morning, demanding a confession with the patience of someone who knows time is on her side. She gets one eventually, though not the whole of it, and it earns Cersei only a walk through the streets rather than freedom. Unella walks just behind her the entire way, ringing a bell and chanting the word she has been saying for weeks: shame, shame, shame.
Season Six
Cersei does not forget who rang the bell. Once the crown is hers outright, Unella is dragged into a cell of her own and chained to a chair across from the queen she used to break down, and Cersei returns every question with interest — was it good, does the Mother judge her, does she still believe confession earns mercy. She leaves Unella with a mocking echo of her own catchphrase and the Mountain standing silent in the corner, and walks out. Nobody sees Unella again, and nobody left in the Red Keep is inclined to ask.
How it ends for them
The chronicle records no death for this soul — they are living when the tale leaves them, or their ending is a page the maesters have yet to turn.
Their chapters, book by book
Where the page and the screen part
Book Unella exists mostly as a plural: she is one of three septas — Unella, Moelle and Scolera — who share the custody and catechizing of Cersei in the novels, her personality merged with her sisters' into a single grinding apparatus of scripture and sleeplessness, and the walk's tolling bell belongs to the trio's escort rather than one iconic face. The show consolidated the committee into a character, as it habitually does, and then invented her entire second act: the wine-boarding scene and Cersei's slow-spoken confession over her are television's own, since in the books the Faith still stands and its septas remain unpunished custodians awaiting the queen's trial. Neither telling grants her a fate on the page or screen — the books leave her on duty, and the show leaves her in that room, the door closing on whatever the Mountain's patience looks like — an ending withheld so deliberately that the withholding is the point.
Their journey
Where the two tellings send them to the same place the road runs whole; where they part, the screen keeps the left and the books the right.