Yuichi Mizuguchi (水口 侑一, Mizuguchi Yūichi, April 22) is a voice actor (seiyuu) from Tokyo, Japan, who is affiliated with Office Kaoru. He is 170 cm tall and weighs 80 kg. He graduated from the voice actor training school affiliated with Office Kaoru. His hobbies are visiting used bookstores, collecting used books, playing games, karaoke and music. His special skills are swimming, karate, Chinese martial arts, and singing.