Yamata has tanned skin, short thick eyebrows and black hair tied in a spiky ponytail. He wears a silver and blue DDA uniform, a metal chestplate, silver earrings and a grey cape. His arms are bandaged.
Yamata was among the Divine Dragon Alliance members who were participating in the battle against the 56th Floor's Field Boss, Geocrawler.
Yamata was among the Divine Dragon Alliance members participating in the Boss Fight of the 75th Floor against The Skull Reaper and was logged out of the game after Kirito killed Heathcliff, prematurely clearing the game.