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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.
Koichi Hashimoto

Kōichi Hashimoto (橋本 晃一 Hashimoto Kōichi?), real name Yōichi Mitsuhashi (三橋 洋一 Mitsuhashi Yōichi?), is a seiyū born January 12, 1953 in Chiba Prefecture, Japan. He is currently a free agent, not attached to any talent management firm, though he has in the past been attached to Arts Vision, Aksent, Ken Production, and Art 7. He is known for his unusual trembling and cold voice. He is a seiyū of Dr. Ivo Robotnik in the Japanese dub for Adventures of Sonic the Hedgehog and the dictator Doctor Robotnik in the Japanese dub for the Sonic the Hedgehog television series, as well as the Swat-bots and other characters.

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