Nita Callahan is a fictional character from the Young Wizards series, created by Diane Duane. She is a teenage girl who discovers her magical abilities and becomes a wizard. Nita is known for her intelligence, bravery, and strong sense of justice, often using her skills to help others and combat dark forces. Throughout the series, Nita forms a close friendship with Kit Rodriguez, another young wizard. Together, they navigate the challenges of learning magic and facing various threats in their world. Nita's character development highlights themes of friendship, responsibility, and the importance of making choices.