Muichiro is known for his teal eyes,long black hair that stops at his waist,that has teal ends,and his calm but cold nature. His personality type is INFP ,hes known for a cold,normally has a blank face,serious at times,air headed,stoic, and sometimes aloof personality. Hes the 14 year old mist hashira,hes been a slayer since 12,has a dead twin brother named yuichiro. He also wears a over sized demon slayer uniform.