Jamie Campbell Bower (The Mortal Instruments: City of Bones, Sweeney Todd) as Peter Ballard, "a caring man who works as an orderly at a psychiatric hospital."
Eduardo Franco (Booksmart, "American Vandal") as Argyle, "a fun-loving stoner who proudly delivers delicious pizza pies for Surfer Boy Pizza."
Joseph Quinn ("Catherine the Great", "Howards End") as Eddie Munson, "an audacious 80’s metalhead who runs The Hellfire Club, Hawkins High’s official D&D club. Hated by those who don’t understand him — and beloved by those who do — Eddie will find himself at the terrifying epicenter of this season’s mystery."
Tom Wlaschiha ("Game of Thrones", "Crossing Lines") as Dmitri, "a Russian prison guard who befriends Hopper. Dmitri is smart, cunning, and charming… but can he be trusted?"
Sherman Augustus ("Into the Badlands", "Westworld") as Lt. Colonel Sullivan, "an intelligent, no-nonsense man who believes he knows how to stop the evil in Hawkins once and for all…"
Mason Dye ("Teen Wolf", "Bosch", "The Goldbergs") as Jason a Hawkins High student who "seemingly has it all — he’s handsome, he’s rich, he’s a sports star, and he’s dating the most popular girl in school. But as a new evil threatens Hawkins, Jason’s perfect world begins to unravel…"
Nikola Djuricko ("Genius: Einstein", In The Land of Blood and Honey) as Yuri, "a seedy and unpredictable Russian smuggler who loves bad jokes, cold hard cash, and crunchy style peanut butter."
Robert Englund (A Nightmare on Elm Street) as Victor Creel, "a disturbed and intimidating man who is imprisoned in a psychiatric hospital for a gruesome murder in the 1950s."
Recently, I was watching an episode of The Outer Limits from 1964. It was called Production and Decay of Strange Particles, and it was about a lab where something went wrong and a portal was opened to another dimension. The men of the lab had to work to close the portal before the aliens on the other side could come through. The men closest to the portal wore hazmat suits.