Nancy Wheeler

Nancy Wheeler, portrayed by Natalia Dyer, is a main character in Stranger Things. Nancy is a young adult and an aspiring journalist, and an ally to "The Party". She is the older sister of Mike Wheeler, the paternal aunt of his daughter, Sarah Wheeler, the former girlfriend of Steve Harrington, and the current girlfriend of Jonathan Byers.
In the fall of 1983, Nancy was a simple teenage girl dealing with choosing between her best friend Barbara Holland and her boyfriend Steve Harrington. Everything changes for Nancy when Barbara vanishes without a trace, and she soon teams up with loner Jonathan Byers, who is also searching for his missing younger brother, Will. Though their unlikely friendship causes friction between Steve, he joins the two in defeating a monster from another dimension and rescuing Will. However, Nancy is horrified to discover Barbara had been killed by the monster.
In the fall of 1984, Nancy's struggle to grieve over Barbara in silence eventually causes a rift between Steve, where she eventually reveals in a drunken state that she doesn't love him. Wanting revenge on the people responsible for unleashing the monster that killed Barbara, she once again teams up with Jonathan and a journalist named Murray Bauman to expose Hawkins Lab. In the process, she and Jonathan begin having attraction for one another, and eventual succumb to their feelings. Returning to Hawkins, Nancy joins Jonathan and his mother in getting a demonic creature possessing Will. A month later, Nancy finally receives closure for her best friend and is now Jonathan's girlfriend.
In the summer of 1985, Nancy works at the Hawkins Post with her photographer boyfriend, Jonathan, where she is treated with disrespect by her older male colleagues. Working late one night at the paper, she answers a call about diseased rats in the town and secretly investigates it with Jonathan. This would eventually cause the couple to be fired and a rift between Nancy and Jonathan. But with some encouragement from her mother, Nancy picks the story back up and discovers that the rats and Mrs. Driscoll's strange habits are linked to the Mind Flayer that possessed Will. Reconciling with Jonathan, the two join their brothers and friends in once again defeating the Mind Flayer. Three months later, Jonathan's family moves out of Hawkins and parts ways tearfully with Jonathan.
In the spring of 1986, Nancy is an editor at the Hawkins High newspaper, The Weekly Streak. She's in a long-distance relationship with Jonathan now that he's moved to California, but despite their deep love for each other, neither of them can get away to meet up for spring break.