Tetsuido is an elderly man, evident by the wrinkles on his skin and skinny frame. He has long white hair that reaches past his neck. As a resident of the Swordsmith Village, he wears a Hyottoko mask to hide his face. He wore a long dark green haori, baggy black pants tied around above his ankles, white socks, and light gray slippers. He is commonly seen smoking. Tetsuido was a gentle, keen, and understanding man.