Mermaid is a mermaid who Little Bear occasionally meets when he goes to the lake. She is friendly and takes him to see places underwater.
She has dark blue hair with a purple flower in it, golden sea shell earrings, and lavender skin.
- Little Bear's friends never got to see her, and were in denial when Little Bear tried to tell them about her. But in "Little Bear and the Sea Monster", Owl got to see her. Emily also got to see her in "Granny's Old Flying Rug".
- Little Bear and his friends pretended to be asleep when they wanted her to show up