Isabelle Collins was one of the older children to fall into the Underground at the age of 9 years old. As a bearer of an Integrity Soul, she is naturally very honest and upfront about her feelings and values. She has a Dusty Tutu and Ballet Shoes. She loves ballet. She was practicing her ballet dancing too close to Mt. Ebott, where she fell in a hole after tripping. She went on a journey Underground and Asgore eventually killed her, taking her Soul.