Yasuaki Matsumoto

Yasuaki Matsumoto (Y. Mat, Y.MAT, Y.MAT as LABOR, Y.Mat as Yasukun [Y.MAT as やすくん]), creditado como Designer de Som.

Aparece nos jogos: Blue Dragon, Spectral Souls: Resurrection of the Ethereal Empire, Silent Scope 3, Pro Evolution Soccer 2, World Soccer Winning Eleven 2002, Shadow of Destiny, Gungage, Dancing Blade: Katte ni Momotenshi!, Gradius Gaiden e Castlevania: Symphony of the Night.