Matsui Gō is an anthropomorphic sword fighter manifested from an uchigatana, appearing in two distinct forms: a standard version and an upgraded Toku version.

In his standard form, he excels in survival at 39 out of a maximum 44 and leadership at 38 with a potential of 48. His impulse is 26, expandable to 44, while his killing blow remains fixed at 36 and his camouflage at 36. Impact is rated 38 with a ceiling of 55, and mobility is 37, capable of reaching 46. His combat range is narrow, his scouting ability is 35 with a maximum of 39, and he occupies two troop slots.

The Toku form enhances these capabilities significantly. Survival improves to 44, leadership to 43, impulse to 31, and camouflage to 41, while killing blow stays at 36. Impact rises to 43, mobility to 42, and scouting to 40, each with higher maximums of 60, 51, and 44 respectively. Range remains narrow and troop slots stay at two. Achieving this form requires reaching rank-up level 20.

Matsui Gō stands 176 cm tall. He is unobtainable through standard gameplay drops. The character appears as a minor figure in the film trilogy *Toku Touken Ranbu: Hanamaru - Setsugetsuka*. No specific role, actions, or background within this or other media are detailed.