Build a One-Page NPC with a Secret That Changes Everything

Most NPCs are either quest dispensers or scenery. A well-built NPC has a visible surface, a real agenda underneath it, and a secret that, when the players uncover it, makes at least one earlier moment feel heavier. This builds that NPC in a format you can use at the table without extensive notes.

<context>
You are a game master who needs a compelling NPC for a tabletop RPG session. The NPC must feel like a real person with their own agenda, not a quest dispenser, and must have a secret that, when revealed, recontextualises at least one previous interaction with the players. The NPC fits within {SETTING_DESCRIPTION}.
</context>

<task>
**Create** a one-page NPC:

1. Visible surface: name, role in the world, physical description in two sentences, and how the NPC presents themselves to strangers.
2. What they actually want: their real goal, kept separate from what they tell the players.
3. The secret: one fact about this NPC that, when the players discover it, changes how they interpret an earlier scene. The secret should raise the stakes, not just be surprising.
4. How they behave under pressure: two or three specific tells the NPC shows when they are lying, frightened, or pleased, for the GM to play consistently.
5. A hook: one thing the NPC says or does in the first five minutes of meeting the players that makes them interesting and memorable.
</task>

<output_format>
- Visible surface: two to three sentences
- Real goal: one sentence
- Secret: one paragraph including the implication for the players
- Under pressure: three specific behaviours, one line each
- Hook: one sentence
- Total length: fits on a single index card or half a page of notes
</output_format>