Koji Nishino is a planner at Game Freak. He has been involved in the Pokémon series since and has worked mostly on designing and balancing the parametric data of the titles, including Pokémon movesets, wild Pokémon distributions and trainer teams.
Red and Green
(1996) - Parameter Design, Map Design
Pokémon Red and Green (1996) - Parametric Design, Map Design
Pokémon Blue (1997) - Map Design & Balance Check
Bushi Seiryūden: Futari no Yūsha (1998) - Advisor
Pocket Monsters Stadium (1998) - Game Design, Parametric Design, Map Design
Pokémon Yellow: Special Pikachu Edition (1999) - Advisor
Pokémon Stadium (1999) - Game Design, Parametric Design, Map Design
Pokémon Gold and Silver (2000) - Game Design, Game Scenario, Parametric Design, Map Design
Pokémon Crystal (2000) - Advisor
Pokémon Stadium 2 (2001) - Original Game Staff (Planning: Pokémon)
Super Smash Bros. Melee (2002) - Game Designer, Plot Scenario, Map Designer, Parametric Designer
Pokémon Ruby and Sapphire (2003) - Pokémon Advisor
Pokémon Colosseum (2004) - Planning Leader, Game Designer, Parametric Designer
Pokémon FireRed and LeafGreen (2004) - Game Designer, Scenario Plot, Parametric Designer
Pokémon Emerald (2005) - Pokémon Advisor
Pokémon XD: Gale of Darkness (2006) - Game Designer, Plot Scenario, Map Designer, Parametric Designer
Pokémon Diamond and Pearl (2006) - Pokémon Advisor
Pokémon Battle Revolution (2008) - Game Design, Plot Scenario, Map Design, Parametric Design
Pokémon Platinum (2009) - Game Design, Parametric Design
Pokémon HeartGold and SoulSilver (2010) - Battle System Design, Pokémon & Trainer Parameter Design
Pokémon Black and White (2012) - Game Design, Map Design, Parameter Design
Pokémon Black 2 and White 2 (2013) - Game Battle System Design
Pokémon X and Y (2014) - Game Battle & Contest System Design
Pokémon Omega Ruby and Alpha Sapphire (2016) - Battle Planning
Pokémon Sun and Moon (2017) - Battle Planning, Battle Data Design
Pokémon Ultra Sun and Ultra Moon (2018) - Game Design, Catch & Battle Game Design, Data Design
Pokémon Let's Go, Pikachu! and Let's Go, Eevee!
Nishino makes an in-game cameo in , where he Pokémon Black 2 and White 2 can be battled at the Game Freak building in Castelia City. He uses the sprite of a Hiker.
The Pokémon Snorlax's design is a caricature of Nishino; its Japanese name (Kabigon) is based on Nishino's nickname.