Oona is a female guppy who appears in many episodes of Bubble Guppies. She's the "Sweetie Pie" of the group.
Oona is really kind, caring and she's a great friend to the other guppies. She loves baby animals, and she thinks babies are so adorable, and she and Deema were excited when Molly was a big sister. In the "Tricera-cops" story segment from "Can You Dig It?", she was comforting a sad baby dinosaur who lost her mommy, and she and Officer Gil found out that the T-Rex was the baby dinosaur's mommy.
Oona has light skin, purple hair in pigtails, and her hair piece is a starfish. She has a full purple and light pink tail that reaches her top.