Born May 9, 1981, in Konohana-ku, Osaka. 176cm tall, slender and lean. Blood type: A. Dialect: Osaka-ben. Real name: Kimitaka Yokoyama. Nicknames: Yoko, Yu-chin, Yoko-cho. Oldest member of the group. Member color: Black. Frequently appears in dramas, often playing cool characters, police officers, or roles with a dark past. Very forgetful; has had his driver's license reissued seven times. Joined at the same time as Shingo Murakami. Instruments: Trumpet (started February 2013) and percussion. Special skill: Basketball. Personality: Hates to lose and can be a bit childish, but is a hardworking, caring person who looks after the members and his juniors. A shy tsundere. Appearance: Has striking, non-Japanese features with a straight nose and skin so pale and clear he is often teased as "The Russian Yokoyama." Features almond-shaped eyes and distinctive, plump lower lips. Favorite food: BBQ and similar dishes. Dislikes: Cucumbers, pickles, etc. Has two younger brothers (6 and 8 years younger). Parents divorced when he was 3; mother remarried when he was 5, but he had a poor relationship with his stepfather. His mother divorced his stepfather after developing cancer and passed away suddenly from ischemic heart disease when he was 29. To support the household, he worked a paper route in middle school. After graduation, he did not pursue higher education and worked for a construction company while pursuing his entertainment career.

Born September 22, 1981, in Ibaraki, Osaka. 165cm tall, delicate and very thin. Blood type: O. Dialect: Osaka-ben. Nickname: Shibuyan. The group's ace. Member color: Red. Joined at the same time as Ryuhei Maruyama. Instruments: Main vocals, rhythm guitar, and blues harp. Hobby: Vintage clothing. Personality: Has a whimsical, cat-like nature but is deeply compassionate. Though shy, he is a charismatic powerhouse when it comes to music. A tsundere cat. Appearance: Has large, round, sharp cat-like eyes with a double eyelid. His gaze is intense and can be slightly intimidating, but his face looks incredibly youthful when he smiles. Disliked foods: Mushrooms (except matsutake), sweets, and spicy food. He is the one who named the group's fans "eighter." The second of three brothers. Likes dirty jokes and erotic topics.

Born January 26, 1982, in Takatsuki, Osaka. 170cm tall, average build, muscular. Blood type: AB. Dialect: Thick Osaka-ben. Nicknames: Hina, Shin-chan. Member color: Purple. Frequently serves as an MC on television programs. Joined at the same time as Yu Yokoyama. Instruments: Keyboard and piano. Hobbies: Soccer and futsal. Personality: Highly social and bright, a kind person who can get along with anyone. He is a master of the "carrot and stick" approach—sometimes strict, sometimes gentle. Can be a bit lonely. The group's "tsukkomi" (straight man). Appearance: Has beautiful double eyelids and cute, sparkling, slightly droopy eyes. His snaggletooth (yaeba) is a trademark feature. Favorite food: Japanese cuisine. Dislikes: Herbs and sweet desserts. The eldest of two brothers, with a brother 6 years younger.

Born November 26, 1983, in Kyoto, Kyoto. 175cm tall, average build, weight tends to fluctuate. Blood type: A. Dialect: Kyoto-ben. Nickname: Maru. Member color: Orange. Occasionally acts in dramas and stage plays. Often performs gags and tends to compose "cursed songs" that get stuck in the listener's head. Joined at the same time as Subaru Shibutani. Instrument: Bass. Personality: A bright and energetic mood maker who has never met a stranger. He is the brightest member of the group but also possesses the most "darkness." He gets in a bad mood on the night of a full moon. Appearance: Round, droopy eyes with hidden double eyelids. Notable for his dimples and a mole near his mouth. Favorite food: Kyoto regional cuisine, sweets. Dislikes: Bitter things. Father is a drum maker and bodybuilder. His parents divorced when he was 2. His father remarried when Maruyama was 31; his stepmother is 6 years younger than Maruyama himself. Eldest of five siblings. Two younger brothers (one is 12 years younger) and two younger sisters (one is 14 years younger).

Born September 11, 1984, in Amagasaki, Hyogo. 164cm tall, petite and delicate. Blood type: A. Dialect: Kansai-ben. Nicknames: Yasu, Sho-chan. Member color: Blue. Possesses top-tier artistic talent. Joined at the same time as Ryo Nishikido and Tadayoshi Ohkura. Instrument: Lead guitar. Personality: Deeply considerate, kind, and gentle. It is said that if Yasuda ever gets angry, everyone acknowledges the other party must be at fault. A truly kind soul who almost never loses his temper. Appearance: Has large, clear eyes that slant upwards slightly, but his overall expression is soft and kind. Frequently changes his hair color and style. Wears flashy clothing. Favorite food: Mochi and spicy food. Dislikes: Natto. The younger of two siblings, with an older sister 3 years his senior.

Born November 3, 1984, in Kadoma, Osaka. 169cm tall, delicate and thin. Slender build. Blood type: O. Dialect: Osaka-ben. Nickname: Dokkun. Member color: Yellow. Frequently stars as the lead in dramas. Joined at the same time as Shota Yasuda and Tadayoshi Ohkura. Instruments: Main vocals and guitar. Personality: Extremely shy and often misunderstood as being angry, but actually has the temperament of a lonely youngest child who knows how to act spoiled. Appearance: Has beautiful, sexy droopy eyes with double eyelids. Notable for a beauty mark under his left eye and another below the right side of his mouth. Picky eater; dislikes vegetables and fish. The third of four siblings, with two older brothers (3 and 2 years older) and a younger sister (2 years younger).

Born May 16, 1985, in Higashiosaka, Osaka. 178cm tall, large build. Blood type: O. Dialect: Osaka-ben. Nicknames: Tatsuyoshi (Tatsu), Tacchon. Member color: Green. Frequently appears in dramas. Has a weak stomach. Joined at the same time as Shota Yasuda and Ryo Nishikido. Instrument: Drums. Personality: Often acts spoiled and may seem lazy, but he is a man who delivers when it counts. A kind-hearted person. Appearance: Has sleepy-looking, droopy eyes that give a soft impression. Has three moles on his left cheek. Will eat basically anything except for "bizarre" foods. The eldest of three brothers, with brothers 1 and 5 years younger. His father is the founder of a major izakaya chain.