Oona is a fictional character from the animated series Adventure Time. She is a young girl who is known for her adventurous spirit and strong sense of curiosity. Oona often explores the Land of Ooo, encountering various creatures and challenges along the way. Her character embodies themes of friendship and bravery. In the series, Oona is often seen alongside her friends, including Finn and Jake. Together, they embark on quests that teach valuable lessons about teamwork and perseverance. Oona's vibrant personality and imaginative adventures make her a beloved character among fans of the show.