Season 2 of Stranger Things is in production now, and star David Harbour says that the biggest change between making Season 1 and Season 2 is the amount of pressure the cast and crew feel to deliver a second season that's as good as the first. According to Harbour, Hopper is a changed man -- in Season 1 he was a jerk who rose to the occasion, and Season 2 will deal with the repercussions of that. Stranger Things Season 2 plot details revealed! [...] just to clarify, when Harbour says he's "terrified," he's talking about his own expectations of Season 2, not that the show is going to be really scary now. Viewers at home see the monster, but to Harbour, "it's a guy in a puppet suit with, like, fans blowing into him because he's so hot in this rubber suit."