Hiroshi Matsuyama (松山洋) is the president of CyberConnect2 and the director of Project .hack and .hack Conglomerate. He is one of the strongest influences behind the .hack series, not only leading the project but making numerous artistic contributions himself, such as the creation of Grunties. He has inserted himself into the world of .hack as the characters Piros and Piros the 3rd, and lended his voice to the .hack//G.U. GAME MUSIC O.S.T.s.
- .hack Games -
- .hack//G.U. Games - Original Bill, Chorus, Total Production/Director (Development), Director (Movie Finish Works), Grand Design
- .hack//XXXX - Original Concept
- .hack//G.U. The World - "Tell me Piros the 3rd!"
- .hack//G.U. Returner - Screenplay