The unchangeable: birth year, family, appearance, history before page one. If it can never change, it lives here.
Three to five lines of dialogue that are unmistakably this character — pasted from your own draft. When you suspect drift, read these aloud, then the new scene.
What this character knows that others don't — and the scene where they learned it. This is the only defence against the deadliest error: acting on information they don't have yet.
Who they are at the start versus the end, and the turn in between. Out-of-character moments only stand out once the arc is named.
Consistency gaps
- No fixed facts yet — the small details (eyes, age, family) are exactly what drifts by chapter forty.
- No voice anchor — without a few real lines, voice drift is almost impossible to catch on a reread.
- No knowledge ledger — logging what they know and when they learned it prevents the deadliest error: acting on information they don't have.
- No arc — name who they are at the start vs the end, so out-of-character moments stand out.
The four ways a character drifts
- Attribute drift
- Eye colour, age, scars, the spelling of a name. The cheapest to fix and the only kind find-and-replace can save you from.
- Timeline drift
- Ages that don't add up, a sibling who appears and vanishes, a hometown that moves. Requires checking each claim against a master timeline.
- Knowledge drift
- A character acts on something they haven't learned on the page. You knew it, so it never occurred to you that they don't. Readers feel it as telepathy.
- Voice & motivation drift
- A blunt character slowly turns eloquent; a cautious one gambles everything because act three needs it. Invisible scene by scene, obvious book by book.
A profile remembers your character — but it can’t read your draft back. In Creader, the AI checks every chapter against it. For the full method, read our guide to character consistency, or build the wider world in the story bible builder.
More free writer's tools
- Story bible builderCapture characters, locations, rules, timeline, and threads as one structured world.
- Timeline checkerOrder your events, derive every age, and catch chronology conflicts.
- Magic system pressure testerPressure-test a rule across power, cost, limit, access, and escalation.
- Foreshadowing trackerPair every setup with its payoff and surface the threads left dangling.
- Worldbuilding promptsSeventy-plus questions that pressure-test the parts of your world that don't hold.