At least, I think that’s Kyrie Irving. The caption suggests that’s him, but there’s really no way of telling for certain.
Several other Cavaliers had high-effort costumes, including LeBron:
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#repost When you crush the Halloween party…. “Just when I think you couldn’t possibly be any dumber, you go and do something like this… and totally redeem yourself.” — Harry…after winning "Most Like The Real Thing" for the 2nd year in a row!!! @katebock Thank you @mrs_savannahrj @kingjames