Sadness was the second Emotion to take hold in Riley's mind, appearing 33 seconds after Joy. Afterwards, she tended to be more on the wayside than the other Emotions, both because Joy does not see any use to her and because she is not very confident herself. She often ends up reading mind manuals, a practice in which she is encouraged by Joy. On the upside, her readings confer her a superior knowledge of the mind world outside Headquarters.