An NPC is one want

You prepped the merchant. Three paragraphs. Where he was born, his late wife, his overland trade route, his fear of the sea. You are quietly proud of it.

The players walk into his shop and ask, "Can you get us into the warehouse district after dark?"

And you freeze. Because nothing in those three paragraphs tells you what he would answer. You gave him a history, not a want.

This happens to every GM. We prep characters the way we write a biography: from the past toward the present. But at the table, the player never enters through the past. They enter through the now, with a question you did not see coming.

The principle: a want gives direction, a backstory does not

A backstory tells you where a character comes from. A want tells you what they are reaching for right now. And the second is what you need, because every unexpected question from a player can be answered by turning the same question back on yourself: what does this character do to get closer to what they want?

In the Workshop we built NPCs from one want and one detail. Here we look at the half that makes the character move. The detail makes them stick. The want makes them act.

And it follows on from the previous chapter. There we ended on one want and one concrete price. An NPC is exactly that first thing, poured into a body.

Catch the want in one sentence

One sentence, in the present tense, concrete enough to act on.

"He wants to pay off his debt to the harbormaster before it is too late."

Notice the difference from a trait. "He is afraid of the sea" tells you nothing about what he does now. "He wants to stay off any boat at all costs" does. A trait describes him. A want pushes him somewhere.

A few examples to catch the rhythm:

• The guard wants to avoid notice until his shift is over.
• The priest wants someone to finally believe what he saw.
• The innkeeper wants to know why you are really in her town.

None of these sentences needs a backstory to work. They work right away.

Play every scene from that want

In every scene, ask yourself one question: what does this character do, here and now, to get closer to what they want?

Back to the merchant, who wants to clear his debt. The players ask whether he can get them into the warehouse district. Now you know at once. Maybe he says yes, for a price that brings him closer to paying it off. Maybe he says no, because the harbormaster is exactly who watches that district, and he cannot take the risk. Either way, the want has answered the question for you.

This is where improvising gets easy. You are no longer asking what this character would say, a question with no floor. You are asking: what does he want, and does this help or hurt him. That always has an answer.

One want, one detail

A want makes a character move. A detail makes them linger in your players' memory. You need both, and nothing more than that.

The merchant wants to be rid of his debt, and all through the conversation he keeps wiping the same spot on his counter. Two strokes, and he is alive. The want steers his choices. The detail is what the players still remember three sessions later: that man with the rag.

This is the same approach as in "Beyond the backstory." One want, one detail, done. Everything you invent after that can arise in play, the moment you need it and not a second sooner.

To close

Back to the merchant behind his counter. You did not need those three paragraphs. You needed one sentence: he wants to be rid of his debt before the harbormaster comes for him. Ask him any question at all, and the want answers.

And the best part comes on its own. The moment his want meets your players' want, the moment they want into the warehouse and he is the one who cannot risk it, the scene appears. Not because you wrote it, but because two people want different things in the same room.

A character becomes real through one concrete detail and one want. The detail we saw in the Workshop. The want is what makes them walk.

For your next session: take one NPC who matters. Throw out the backstory. Write down one want, in one sentence, in the present tense. And at the table, ask yourself only that one question: what does he do to get it.