It goes without saying that the entire cast is coming back for season three (which comes along with hefty pay raises for the show's lead child and adult stars). With such a small town and so many interwoven storylines, it would be hard to exclude anyone from future episodes. Thankfully, we'll also be seeing more of season two's "Mad" Max (Sadie Sink), who found her way into the group thanks to Dustin and Lucas's fondness for her arcade skills (and began a sweet romance with the latter at the same time). Max's brutish big brother, Billy (Dacre Montgomery), will also be making a return to possibly torture everyone with his mullet.
Of course, there's the question of Kali, Eleven's long-lost "sister" (aka another test subject from Hawkins lab), who is introduced in the season's highly contentious seventh episode. In a November 2017 panel, co-creator Matt Duffer insinuated she'd return. "It feels weird to me that we wouldn't solve [her] storyline," he said. "I would say chances are very high she comes back."
There's one more question mark in this equation that's looking more and more like an exclamation mark: Dr. Brenner. Season two hints that he's still alive in a pretty big way, so we wouldn't be surprised to see him in season three.
We also have a handful of new characters to look forward to, including the mysterious Robin who is described as an "alternative girl bored with her mundane day job" at the new Starcourt Mall.
