Most Listed Flaws Are Not Flaws
Open a hundred character profiles and you will find the same entries: stubborn, trusts too easily, sarcastic, haunted by their past. Some of these are traits, some are backstory, and a few are compliments wearing a disguise.
A working flaw meets one test: it makes the character do something that costs them. If it never changes a decision, it is decoration.
The Three Kinds Worth Having
The flaw that wins arguments. Something the character is genuinely good at, used badly. The negotiator who cannot stop negotiating, including with people who have already agreed. It is a strength turned up past useful.
The flaw that protects something. Behaviour that was once necessary and is not any more. Hoarding. Refusing help. Never sleeping in an unfamiliar room. It made sense once, which is why it is hard to drop.
The flaw with a price list. A choice the character makes repeatedly, knowing what it costs, because the alternative is worse to them. This is the richest kind — it implies a value system.
Turning a Trait Into a Flaw
Take a trait and ask: when does this hurt them?
- Loyal → stays with a group long after it has stopped deserving them
- Observant → reads meaning into things that had none, and acts on it
- Generous → gives away what they needed, then resents the person who took it
- Disciplined → treats other people's exhaustion as a character failing
Each of those produces scenes. "Stubborn" does not.
The Flaw Should Cost the Reader Something Too
The strongest flaws occasionally make the reader uncomfortable with a character they like. If every flaw is charming, you have written a list of endearments. Let one of them be genuinely inconvenient for the people around them.
How Many?
Two is usually enough — one that shows up in conflict and one that shows up in calm. Profiles with eight flaws read as a mood rather than a person, and in practice only one or two ever surface in play.
Write the Scene, Not the Word
Instead of "impatient", write the moment: "He answers the question you are still asking. Not to be rude — he has simply already decided, and waiting feels like lying." That single line tells a roleplay partner exactly how to provoke him, which is a gift.
When you record flaws in a character profile, give each one a sentence of behaviour rather than a label. Your future partners will be able to play against it without asking you what you meant.
