Nancy Wheeler

Nancy Wheeler is a major character that appears frequently in The Stranger Things Arc of the series.

Background
When her little brother Mike and his friends Lucas and Dustin investigate the sudden disappearance of their friend Will Byers, she doesn't seem to care that much, thinking that they're just being paranoid or making the whole thing up for attention. However, she starts to have second thoughts when her own best friend, Barbara Holland also vanishes in the same fashion as Will. Thinking that something out of the norm is going on, she seeks out the truth and to find Barb.

Biography
Nancy is first seen hooking up with her boyfriend/secret multi-hookup Steve Harrington at his house. As the two kiss, Nancy stops kissing him, saying she has to get home or her family might get suspicious. Steve is somewhat bothered by this, as he hates keeping their relationship a secret, but Nancy tells him that he'll just have to accept it for now. She then kisses him again before leaving, unaware that he's looking at her butt.

Later on, she is told about Will's "disappearnace", but thinks that it's just Mike and his friends pulling a prank.

During the night search for Will, she stays home and studies for a test with Barb. During this, Barb lets Nancy know that she's fully aware of Nancy and Steve's multiple hookups, and Nancy begs Barb to not tell anyone. Barb reluctantly does so as she is Nancy's best friend.

She later walks down a sidewalk to go to Stevens house, but is attacked from a shadow-covered Demogorgon. Before she can be injured or killed, she is saved by Hulk, who is wearing a dark hoodie to conceal his face. He manages to fight off the Demogorgon, but Nancy screams and runs home, with Hulk sarcastically remarking to her, "You're very welcome, Miss!"

Trivia

 * Nancy is the most reluctant to join The Club due to her early skepticism about Will's disappearance.
 * Despite being straight, she openly admits that Charlotte is 'extremely sexy'.