Rindo is of average height and a lean build with neckline-length blond hair in a curtain style that he often wears down but would occasionally put up in a bun. He has purple downturned eyes, blond eyebrows, and a matching tattoo with his older brother on the right side of his back and chest, beginning from his nape and collarbones and ending at his foot. Rindo frequently wears a pair of circular glasses, a silver earring on his left ear, and a black Kanto Manji Gang uniform. Rindo would also wear a different color of uniform for every gang he was in, symbolizing that he and his brother do not want to be part of a group, they are purely on their own. He wore a black version of the Tenjiku gang uniform with a skull motif on the collar alongside a light-colored belt and a pair of gloves. In Rokuhara Tandai, Rindo also wore the uniform in the color black with contrasting white seams and a belt. Rindo is sadistic; he finds joy in fights and has no trouble with inflicting injuries of any degree, which was the main reason why he landed himself in a juvenile detention center at a young age. Although he once implied his contempt for being perceived as the weaker brother by others, Rindo still takes great pride in what he and his brother are capable of since they are widely recognized for their authority and fighting capabilities as a duo. However, his arrogance in parading this confidence was later shown to be the cause of his reckless decision-making, which lost him at least a fight against a much stronger opponent. Rindo is also blunt and prefers to keep more of a stoic facade in comparison to his brother. He would make snarky remarks and ridicule his enemies during fights.

Ran has a lanky build and a small face with purple downturned eyes, blond eyebrows. His shoulder-length hair is alternately dyed in the colors of black and blond, with his roots and their end sections black and the midsection blond. Ran often styles his hair in two neatly-woven pigtail braids in battle but would wear his hair down on occasion. He also has a matching tattoo with his younger brother on the left side of his back and chest, stretching from his nape and collarbones down to his torso and end of his foot. He wears a single black earring on his left ear and is most often seen in a black Kanto Manji Gang uniform. When outside of gang duty, Ran wears a gray loose-fitting sweatshirt and black pants. Ran and his brother were known as the more stylish delinquents, which made Takeshi Mitsuya and people who liked fashion hold a lot of admiration towards them when he was younger. The uniforms he wears which are always tailored to be a different colour than the rest of the members represents the independence of the Haitani Brothers, that they never are never supposed to nor want to be officially part of any gang and purely stick to themselves as a duo. While in Tenjiku, Ran wore a black version of the gang uniform featuring a skull motif on the collar alongside a light-colored belt and gloves. In Rokuhara Tandai, Ran wore a black version of the uniform with contrasting white seams and a belt. In Toman, Ran also wore a white version of the uniform, instead of the official black colour. Ran is naturally whimsical toward others which makes him inscrutable; he is also independent in his own right and only holds regard for his younger brother who he used to govern the district of Roppongi with, other than Izana Kurokawa and Kakucho who he once served under in Tenjiku. This shows the limitations of Ran’s obedience and respect, for he and his brother as a collective duo were widely known for their supreme authority in Roppongi for the majority of their childhood, hence his nescience in shouldering orders from a superior and complying to them. Ran's limited circle of whom he trusts and holds respect for is also the cause of his apathy toward others when he involves himself in battle. He is indifferent to using underhanded strategies in taking out his opponents and has little care for the degree of the injuries he inflicts.