Gretel is a character from the famous fairy tale "Hansel and Gretel," which was collected by the Brothers Grimm. In the story, she is the younger sister of Hansel, and together they face challenges in a dark forest after being abandoned by their parents. The siblings encounter a witch who lives in a house made of candy, leading to a series of adventures that test their bravery and cleverness. Throughout the tale, Gretel demonstrates resourcefulness and courage, ultimately outsmarting the witch to save herself and her brother. The story highlights themes of sibling loyalty, survival, and the triumph of good over evil, making it a beloved classic in children's literature.