Watch David Harbour Breaks Down Stranger Things Fan Theories from Reddit, Fan Theories

David Harbour, one of the stars of "Stranger Things," breaks down fan theories from Reddit. Is the Upside Down the future? Did the US government drop an atomic bomb on Hawkins? Are demogorgons descendants of human beings? Is Steve the real father of Jean Ralphio from Parks and Recreation? David offers his perspective on these questions and theories.

Watch David Harbour Breaks Down Stranger Things Fan Theories from

STRANGER THINGS SEASON 4 THEORY *******SPOILERS******** : r

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Watch David Harbour Breaks Down Stranger Things Fan Theories from

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David Harbour (Sheriff Hopper) weighs in on Stranger Things fan

David Harbour (Sheriff Hopper) weighs in on Stranger Things fan