Yutaka Shimaka, also known as Yuu Shimaka, was a Japanese voice actor born on May 6, 1949, in Nagano Prefecture. He passed away on July 28, 2019. Throughout his career, he was affiliated with Production Baobab and later with Production Aigumi. Shimaka was known for his deep, dignified voice, which made him a frequent choice for well-built male characters and threatening villain roles. He was a notable presence in robot anime during the 1980s and was also active in dubbing foreign films.

Shimaka's career spanned several decades, with numerous roles in television animation, original video animations, and films. He is perhaps most widely recognized as the long-standing Japanese voice of the Disney character Goofy, a role he performed in various series and films, including the Kingdom Hearts video game series. In the mecha genre, he had roles in several Mobile Suit Gundam productions, including Mikhail Kaminsky in Mobile Suit Gundam 0080: War in the Pocket and a character in Mobile Suit Gundam Wing. He also voiced Fumio Fukamachi in The Guyver: Bio-Booster Armor. His work in the Transformers franchise included the role of Thundercracker in the original series, as well as Bruticus and Onslaught in the 1986 OVA Transformers: Scramble City. Other notable anime roles include Senba in Code Geass, Genbu in YuYu Hakusho, and Tekkaman Axe in Tekkaman Blade. He also voiced Pertti in the 1984 series Mori no Tonto-tachi.

Beyond animation, Shimaka contributed significantly to the dubbing of Western live-action and animated productions into Japanese. His dubbing credits include providing the Japanese voice for characters such as Biff Tannen in Back to the Future, Frank the Desk Clerk in ER, and various figures in the James Bond film series. In his later years, he also worked as a lecturer at Tokyo Announce Gakuin and taught at his own private school.