Baby Butter Otter is the youngest of the otter children and Kyle's foster baby sister. Being the youngest of the family, Butter doesn't speak much, but she says simple words relating to whatever's going on. She's very kind and friendly and always enjoys doing the Noodle Dance with her sister Jelly.
Although not really a travelling member of the FT Squad, Butter does go on adventures with them on some occassions. And she will also see Winnie the Pooh, Ash Ketchum, Simba, SpongeBob SquarePants and their friends in Pooh's Adventures of PB&J Otter.
- Butter starred in Kyle's Adventures with PB&J Otter, where she and her siblings introduced Kyle to life at Lake Hoohaw.
- Butter made a cameo appearance in The FT Squad's Adventures in The Lion King.
- Butter made a special appearance at the end of The FT Squad's Adventures in We're Back! A Dinosaur's Story.
- Butter later guest starred in The FT Squad's Adventures in Circle of Life and will guest star later in The FT Squad's Adventures in A Bug's Life.
- Butter will see Littlefoot and his friends in Littlefoot's Adventures of PB&J Otter.
- Butter will see Charlie Brown, Snoopy, the VeggieTales Gang, The Muppets, Mario, Sonic the Hedgehog, Barney the Dinosaur, Chip and Dale, Scrooge McDuck, and their friends in Charlie Brown and Snoopy's Adventures of PB&J Otter.