I am the moon on Bear in the Big Blue House (and also the literal Spanish and Italian translation of the word "moon.")

At the end of every episode, Bear climbs to the attic (though, on occasion, he heads out to the Otter Pond) to talk to me about the day's events. Together we sing "The Goodbye Song" to close the show. More occasionally, other characters sometimes also talk with me and/or sing "The Goodbye Song." Bear and I are old friends. I often know just what Bear's thinking and sometimes speaks in unison with him. Because I am very old (at over 4 billion years old), I am full of wise advice.

I undergo a slight appearance change in the fourth season of the show. my coloring is more yellow.

I was recast for the stage show Bear in the Big Blue House Live: Surprise Party (which was also released as the DVD Bear in the Big Blue House Live!) For that show, Carol Dennis recorded the voice of me.