Gender: Female

Age: 13

Birth date: 8 August

Blood type: A

Ai Mori is one of Ueki's classmates at Hinokuni Junior High School. When in a casual mood, Ai is usually upbeat and friendly, although she is often shown with a very shallow side, initially believing that all power-users (with the exception of Ueki) are dangerous enemies that can't be trusted. Still, Ai cares deeply for her friends, especially Ueki. She discovers Ueki's power early on, coming to a rather unusual conclusion and at first believing him to be an alien. Upon learning of the competition Ueki is in, she decides to back him up, to keep him from losing all his talents and disappearing because of it.

She is strict with Ueki at times, especially when he looks like he is about to do something rash. Ai continuously tries to be his voice of reason, although her shallow antics and outspoken personality often annoys him.

The food she cooks tends to look rather odd and off-putting (usually with squirming octopus tentacles), but it still tastes good. It seems she may have a crush on Ueki as she often blushes when she sees him (especially when the manga series come to an end), but it is not admitted in the series.