Spencer Polanco Knight
American influencer
Spencer Polanco Knight (born April 20, 1992), also known as Spencer X, is an American beatboxer and social media personality. Formerly a street performer, Knight gained popularity on TikTok in 2019 and has become one of the most-followed accounts on the app. He also voiced Sound Effects Smurf in the 2025 film Smurfs.
Spencer Polanco Knight’s social media accounts
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