Looking back on the early days of the show, Joe says he thought his character Steve was merely going to be the "jerky boyfriend."
As filming began, he was only given a few scripts at a time, so he never really knew what was coming next for Steve.
Each time the Duffer brothers presented him with more material, he was genuinely surprised.
"I read one, maybe, episode of the show, two episodes. And it was kind of like — we read three episodes — and then they had two more," Joe said on The Tonight Show.
He added that the team was really "building it out" as they were going along, and things were often going "day to day."
Obviously, things worked out for Steve as four seasons in, he's still an important part of the cast — and a fan favorite.
"It feels like such a small thing when you're doing it down there, shooting it and working, and then so many people have seen it. It's crazy," Joe shared.
