Originally known as '울산큰고래', Park Sung-ju, now commonly known as '동네형 박성주', is a South Korean YouTuber and internet broadcaster. He began his career in internet broadcasting in 2009 on Afreeca TV, making him one of the pioneers in the field.

He was involved in a controversy in 2018 for publicly disparaging other streamers and Twitch staff. After a brief hiatus and an apology, he returned to broadcasting under his new name. His channel focuses on gaming content, primarily FIFA Online 4, and occasionally features family vlogs with his wife and son. 울산큰고래 박성주 is tagged under Gaming.

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