Genyo Takeda worked as a game designer at Nintendo Japan in the 1970s and 80s, as one of their earliest electronic game designers predating even Miyamoto and Yokoi. As of 2009 he is the General Manager, Integrated Research and Development. Takeda worked with young artist and designer Shigeru Miyamoto to create several of Nintendo's long-standing franchises.
Arcade games he was responsible for designing include:
1975, EVR Race
1979, Sheriff (the first game that Takeda and Miyamoto collaborated on)
1980, Space Firebird
1981, Donkey Kong
1983, Punch-Out!! (Takeda also came up with several character names including Glass Joe)
https://web.archive.org/web/20090810124557/http://us.wii.com/iwata_asks/punchout/vol1_page1.jsp, accessed 2009/08/10