A man who is always seen to wear sunglasses and a bartender's suit. Although quiet and nondescript while not angered, he has a very short fuse and fights with incredible strength.He works as a debt collector in Ikebukuro and carries intense animosity towards Izaya. He has a younger brother, Kasuka, who is a top idol under the showbiz name of Hanejima Yuuhei.

His Night Form (yōkai) is confident, strong and inspires "Fear" amongst his allies, leading many to join him. He handle the human side of things with his "Day" form and handle the yōkai-side with his youkai form. While normally calm, reserved and in control, Rikuo can exhibit merciless conviction when in the presence of anyone whose beliefs challenge his, making him very dangerous once provoked. After losing a fight to his grandfather, he is taken to the yōukai village of Toono to train and finally learns what type of demon he is, thus gaining stronger abilities. He has departed for Kyoto to face Hagoromo Gitsune, save Yura and avenge his father. He seems to get stronger when his "Day" and "Night" blood mix.

Killer Bee is very proud of his own power, and like Naruto Uzumaki, has great overconfidence and can be quite cocky and stubborn, especially in terms of his own strength, demanding respect from others and asks to be called "Lord Jinchūriki" (人柱力様, Jinchūriki-sama) and his tailed beast be called "Lord Eight-Tails" (八尾様, Hachibi-sama). Bee has a special way of expressing his pride through song, more specifically in rap-style. He will even write his rhymes in the middle of a fight, or during an important meeting, even if they are no good. This sometimes causes the people around him to become greatly bothered by him. Bee doesn't respect anyone who would make fun of rap or his lyrics.

Mystogan (ミストガン, Misutogan?) is extremely reclusive, fully cloaking every part of his body, and using sleeping spells while visiting the guild. He helps the guild from the background in most occasions, though he directly faces Laxus during his coup.

First impressions of Ban are generally that he is a rude person and has a great sense of pride. With his unruly hair (He's often called "Urchin Head") and sunglasses, people already judge him poorly (It doesn't help that he gives unflattering nicknames to almost anyone he meets, e.g. "monkey trainer" Shido and "thread spool" Kazuki). But he is actually a great guy with a strong sense of leadership and a very talented person. He is one quarter German and he's the grandchild of the "Last Witch of the 20th Century".
He's also a brother-like figure to Himiko Kudo after she has gotten over her brother's death. Himiko's average fighting skills meant that she often bites off more than what she can chew. In such situations, Ban can be counted on to come to her aid (though it must be noted that she does return the favor at times).