Meet the New and Returning Cast Members of Stranger Things Season 2

Astin was added to the cast in November. He'll play Bob Newby, current manager of the RadioShack in Hawkins and former classmate of Joyce's.

Reiser will join as Dr. Owens, who works for the Department of Energy and has been asked to "clean up" everything that went down in season one.

Sink has joined the cast as Max, a tough, tomboyish character with a mysterious past.

Montgomery will play Max's older brother, Billy. He's a "violent and unpredictable" bad boy.

Eleven is reportedly coming back! According to TV Line, Brown has been secured for season two.

Wolfhard will reprise his role as Mike Wheeler.

Lucas Sinclair will inevitably return for season two.

Get ready for tons more lovable moments from Dustin Henderson.

Ryder will once again play Joyce, the endearing but scatterbrained mother of Will and Jonathan.

Not only will Keery be back as bad-boy-with-a-heart-of-gold Steve Harrington, but he's been promoted to a series regular!

Dyer will reprise her role as Nancy Wheeler, Mike's sister.

Will's brother Jonathan will be back, but will he finally win Nancy's heart?

Like Keery, Schnapp has been promoted to series regular.

Why did Sheriff Hopper get in that car? Looks like we might get our answer, as Harbour is set to return.