Matthew Modine is back in the world of Netflix's sci-fi horror franchise with Stranger Things: Catalyst , and it offers a very different look at the mysterious Dr. Brenner . Having been first introduced in the show's debut season, Brenner, also simply known as Papa, is the former head of the Hawkins National Laboratory who spent years experimenting on children and teenagers with psychic and telekinetic abilities.

Serving as an antagonist for much of season 1 in his efforts to bring Millie Bobby Brown's Eleven back to the lab, Brenner wasn't seen again until Stranger Things season 4 , having been confirmed to be alive after being apparently killed by a Demogorgon. Season 4 continued to show Brenner as a questionable moral character, with his abusive mentality being part of wha

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