How we estimate fictional characters' IQ

An IQ score comes from a supervised test compared with a norm group. Fictional characters have neither. What we can do is look at what a character does in their story, judge how much intelligence that takes, and translate the judgement onto the standard IQ scale, where the average is 100 and the standard deviation is 15.

That makes each estimate fan analysis: a reasoned opinion, published with the evidence for and against it, a range and a confidence level. We call it an estimate everywhere, and we never present it as fact.

We score what is shown, not what is said. Every profile weighs five things:

1. Abstract reasoning and deduction. Solving new problems from thin information.
2. Planning under uncertainty. Multi-step plans that account for other minds and for things going wrong.
3. Learning speed and breadth. Mastering new fields fast, and knowledge across many of them.
4. Invention and creativity. Building or devising something genuinely new.
5. Error rate. How often the character is outplayed, misjudges a situation or fails at something a very smart person should not fail at.

The last one matters most for fairness. Being told that a character is a genius earns nothing. Being repeatedly fooled costs points. That is why our numbers sit below the ones fans usually quote.

Each profile also shows six ratings out of ten (deduction, strategy, knowledge, invention, adaptability and reading people). They show how the estimate was built, and they are not averaged into it.

We use the bands below so that similar evidence gets a similar number across characters and franchises.

Every estimate has a range, and its width reflects how much there is to go on. High confidence means a lot of on-screen problem solving to judge, and a range of about 10 points. Medium confidence, about 15 to 20 points. Low confidence means the character is mostly described, or their feats are hard to judge, and the range runs to 20 to 30 points.

When you see a low-confidence estimate with a wide range, that is us telling you how little the story lets us know.

A few characters come with a number from their own series, for example Sheldon Cooper and Spencer Reid at 187, Solid Snake at 180 and Lisa Simpson at 159. We record it as a story fact and say how credible it is. We then make our own estimate from what the character does, and explain the gap. The two can differ. A stated IQ is a claim by the writers. It does not stop the on-screen evidence from telling a different story.

• Teenagers. Many anime and fantasy geniuses are teenagers. We estimate age-normed reasoning at the character's age in the story, and say so on the profile.
• Superhuman characters. Androids, AIs and alien intellects are ranked but flagged. A human IQ number does not describe them, and we say so.
• Power is not intelligence. Strength, magic and luck do not raise an estimate. Several of the strongest characters in fiction sit low in our rankings.
• Spoilers. Each profile carries a spoiler level. The headline number and short answer are kept as spoiler-light as we can, and the evidence section may reveal plot points.

Each profile is checked against published plot summaries, official material and community reference sites. Where we could not confirm a detail we left it out or kept it general, and we name the arc, season or film instead of an episode number unless we verified it. We cite no more than a few words of dialogue.

Fans know these stories better than anyone. If we have got a scene wrong or missed a decisive one, tell us through the contact page and we will check it against the source. Our general sourcing standards are in the editorial policy.

Characters and their franchises belong to their owners. LifeScore is not affiliated with them, and these pages are independent commentary.