Mike and Nancy share the surname Wheeler in Stranger Things.
Mike Wheeler and Nancy Wheeler are siblings in the series’ central Hawkins family. They are the children of Karen and Ted Wheeler, and they also have a younger sister, Holly. Mike is introduced as a middle-school student and the informal leader of the friend group searching for Will Byers, while Nancy begins the story as a high-school student navigating her friendship with Barb and her relationship with Steve Harrington.
The siblings initially seem somewhat distant because they move through different social worlds. Nancy is older and focused on high-school life, while Mike spends his time with Dustin, Lucas, and Will playing Dungeons & Dragons. The supernatural crisis gradually brings their storylines closer together, and Nancy becomes an active investigator of the Upside Down while Mike helps protect Eleven and find Will.
Mike is portrayed by Finn Wolfhard, and Nancy is portrayed by Natalia Dyer. The surname is easy to confuse with Harrington, Henderson, or Byers, but those belong to other characters: Steve, Dustin, and the Byers family.