Stranger Things 2: 9 Big Questions We Need Answering In Season 3

Speaking of unnecessary characters, Stranger Things 2 also introduced us to Billy Hargrove, the abusive adoptive brother of Max, the gang's new addition. For nearly all of the series, Billy flits through the narrative, being a colossal tool to everyone, before the final episodes give him a modicum of redemption.

Though he beats Steve to a pulp in the finale, Max manages to knock him out, which apparently gives him some respect for her as he refrains from bullying her later on. The shift is not as big a change as Steve went on last year - and you definitely can't imagine Billy on babysitting duty in season three - but it seems that he'll be less of a dick next time around.

Another future storyline was also hinted at when Billy visited Nancy and Mike's mother while trying to find Max. He flirts incessantly with the woman and she is clearly attracted to him. Mrs Wheeler has never been more than a background character so far, but it's always been clear that she is trapped in a staid, boring life and marriage. Could Billy and her have an affair in season three? It's possible, but it might be a bit too soap opera-y for this sci-fi series.