From the Super Mario Wiki
Ryuichi Nakada is an employee of Nintendo. First working at Nintendo R&D1 and its successor Nintendo SPD Group No. 1 as a graphic artist and designer on games like Teleroboxer, Tetris Attack and the Game Boy Advance installments of the Metroid series, Nakada was chosen by SPD 1 manager Yoshio Sakamoto to direct WarioWare: Touched!, as the core of the series staff was already busy on WarioWare: Twisted!.
After completing Smile Collecting Book in 2009, Ryuichi Nakada was moved to Nintendo SPD Group No. 3, a division focused on supervising games by western developers. As part of SPD 3, he oversaw the development of Luigi's Mansion: Dark Moon, Paper Mario: Sticker Star and Metroid Prime: Federation Force.
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