Ikutaro Kakehashi (梯 郁太郎, Kakehashi Ikutarō; 7 February 1930 – 1 April 2017), also known by the nickname Taro, was a…Ikutaro Kakehashi (梯 郁太郎, Kakehashi Ikutarō; 7 February 1930 – 1 April 2017), also known by the nickname Taro, was a Japanese engineer, inventor, and entrepreneur. He founded the musical instrument manufacturers Ace Tone, Roland Corporation and Boss Corporation, and the audiovisual electronics company ATV Corporation. Kakehashi founded Ace Tone in 1960 to produce electronic organs and early drum machines. He founded Roland in 1972 and was involved in the development of various influential electronic instruments, such as the TR-808 and TR-909 drum machines and the TB-303 and Juno-60 synthesizers, in addition to Boss guitar amplifiers and effects pedals. He was also key to the development of MIDI, a technical standard that connects a wide variety of electronic instruments, in the 1980s; in 2013, Kakehashi received a Technical Grammy Award, shared with Dave Smith of Sequential, for the invention of MIDI. Kakehashi's inventions are credited with shaping popular music genres such as electronic, dance, hip hop, R&B, rock and pop music.
Yuji Naka (中 裕司, Naka Yūji; born September 17, 1965), sometimes credited as YU2, is a Japanese former video game…Yuji Naka (中 裕司, Naka Yūji; born September 17, 1965), sometimes credited as YU2, is a Japanese former video game designer and programmer. He is the co-creator of the Sonic the Hedgehog series and was the president of Sonic Team at Sega until his departure in 2006. Naka joined Sega in 1984 and worked on games including Girl's Garden (1985) and Phantasy Star II (1989). He was the lead programmer of the original Sonic games on the Mega Drive in the early 1990s, which greatly increased Sega's market share. After developing Sonic the Hedgehog (1991) in Japan, Naka moved to California to develop Sonic the Hedgehog 2 (1992), Sonic the Hedgehog 3 (1994) and Sonic & Knuckles (1994) with Sega Technical Institute. Naka returned to Japan to lead development on Sonic Team games including Nights into Dreams (1996), Burning Rangers (1998), Sonic Adventure (1998) and Phantasy Star Online (2000). After Sega left the console market in 2001, Naka remained as an executive officer and oversaw its output for the next five years. In 2006, Naka left Sega and founded the independent game company Prope. He joined Square Enix to direct the platform game Balan Wonderworld (2021), which reunited him with the Sonic co-creator Naoto Ohshima. Naka said he was removed from the project six months before Balan Wonderworld was released, and it underperformed critically and commercially. He left Square Enix in April 2021. In 2023, Naka was found guilty of insider trading at Square Enix.