Nancy Wheeler is a main character in the Netflix series Stranger Things, portrayed by Natalia Dyer, who evolves from a typical high school student into a brave investigator of supernatural events in Hawkins, Indiana, often teaming up with Jonathan Byers to uncover the truth behind the Upside Down and its monsters, while navigating teenage relationships with Steve Harrington and Jonathan. She is the older sister of Mike and Holly Wheeler, known for her intelligence, determination, and growth.