Mr. Bear is a mute living stuffed bear that lives in the Northern Woods.It is commonly referred to as "Bear". Despite its rather cute appearance, it is short-tempered and frequently lashes out to any stranger that approaches him. It seems to enjoy beating up Mikan.

Later in the story it was revealed that bear was created by Kaname Sonō, a friend of Tsubasa's who is sick and is in the hospital often, as he has the limitless shape alice.

When Tsubasa become extremely ill and is hospitalized Mr. Bear attempts to escape and go see him, his goal being to return his soul to Tsubasa so that he will get better.

Eventually, he starts to like Mikan and even saves her from those trying to harm her.