Princess Bonnibel Bubblegum is a central character in the animated series Adventure Time. She is the intelligent, resourceful, and benevolent ruler of the Candy Kingdom. As a scientist and inventor, she often helps the protagonists with her knowledge and inventions. Princess Bubblegum is known for her leadership, compassion for her subjects, and complex relationship with Marceline the Vampire Queen. Her character explores themes of responsibility, friendship, and the challenges of leadership throughout the series.