Akinori Nishiyama is a Sega employee that has been involved with the company since the Master System era and has undertaken a varitety of roles.
Nishiyama was originally a test player (usually credited by his alias, Works Nishi) based in the company's AM7 department, whose first title was the original Phantasy Star. For its sequel, however, he acted as Writer & Director (under another alias, Chiemushi) and would become a major contributor to the series' fourth installment. He may also have been known variably as Locky P.
Nishiyama retained his position as a scenario writer through the Saturn era with Magic Knight Rayearth, but later transferred to Sonic Team prior to the onset of the Dreamcast era. He then served once more as scenario writer for Sonic Adventure and reacquainted himself with the Phantasy Star series with Phantasy Star Online.
Beginning with Sonic Adventure 2, Nishiyama upheld more executive roles, as demonstrated by coordinating the Tiny Chao Garden in the game's revision. Though his direct role in console titles had diminished, he had more influence in the handheld market, where he served as Director for the majority of the Sonic the Hedgehog series titles released for Game Boy Advance and Nintendo DS and Producer for the Puyo Puyo series titles released on the aforementioned systems.
Beginning with Sonic Gems Collection though, Nishiyama reemerged in the console market as Chief Producer. He continues to hold this title to this day.
|SEGA Executive and R&D Management|
|Chairmen||Isao Okawa (1984-2001) | Hajime Satomi (2004-current)|
|Presidents||Hayao Nakayama (1984-1998) | Shoichiro Irimajiri (1998-2001) | Hideki Sato (2001-2003) | Hisao Oguchi (2003-2008) | Okitane Usui (2008-2012) | Naoya Tsurumi (2012-current) | Hideki Okamura (2014-current) | Haruki Satomi (2015-current)|
|R&D Managers||Hisashi Suzuki (1983-2003) | Hideki Sato (1988-2001) | Yoji Ishii (1989-1999) | Tomio Takami (1988-1996) | Shinobu Toyoda (1989-2008) | Rikiya Nakagawa (1990-2003) | Yu Suzuki (1990-2009) | Hisao Oguchi (1990-2003) | Makoto Oshitani (1992-1999) | Hiroshi Aso (1992-current?) | Shoichiro Irimajiri (1992-1998) | Yukifumi Makino (1992-2004) | Shun Arai (1995-2002) | Noriyoshi Ohba (1995-2004) | Yuji Naka (1995-2006) | Tetsuya Mizuguchi (1995-2003) | Toshihiro Nagoshi (1998-current) | Masao Yoshimoto (1999-current) | Kenji Sasaki (1999-2005) | Hiroshi Kataoka (2001-current) | Mie Kumagai (2000-current) | Takayuki Kawagoe (2000-2013) | Kazunari Tsukamoto (2003-2008) | Hiroshi Uemera (2001-2013) | Makoto Uchida (2002-current) | Yukio Sugino (2004-current) | Hideki Okamura (2005-2008) | Masanao Maeda (2005-2012) | Hiroyuki Miyataki (2005-current) | Okitane Usui (2005-2008) | Akinori Nishiyama (2005-current) | Akira Nishino (2005-current) | Takaya Segawa (2005-current) | Atsushi Seimiya (2005-current) | Osamu Ohashi (2008-current) | Youchi Shimasato (2008-current) | Naoya Tsurumi (2010-2012) | Masayoshi Kikuchi (2010-current) | Yasuhiro Nishiyama (2010-current) | Takashi Iizuka (2010-current) | Haruki Satomi (2010-2015)|
|Sega West Executives||David Rosen (1975-1996) | Bruce Lowoy (1986-1988) | Bruce Lowoy (1986-1988) | Michael Katz (1989-1991) | Robert Deith (1991-2001) | Tom Kalinske (1991-1996) | Bernie Stolar (1996-1999) | Jean-François Cecillon (1998-2004) | Peter Moore (1999-2003) | Naoya Tsurumi (2001-2009) | Simon Jeffery (2005-2009) | Mike Hayes (2009-2012) | Jürgen Post (2012-current) | John Cheng (2012-current)|