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Information in this article is about real-life people, companies and objects, and does not relate to the in-universe Sonic series.
Hirozaku Yasuhara (安原弘和) (also credited as Carol Yas) (born October 12, 1965)is a former Sega employee. He was the level and game designer of Sonic the Hedgehog (1991), as well as well as the director. He also did works on Sonic the Hedgehog 3.