Height: Approx. 155–155.2 cm Eldest daughter Birthday: May 17, 2009 Age: 17 Personality: Reliable and acts as the leader/mediator for the three sisters. She's in charge of calling out her younger sisters' antics, but she often joins in on the fun too. Special Skill: Singing. She showcases her voice in song cover videos. Relationship with Mako and Ako: Bosses them around, but they are close. They fight occasionally. They are playmates. Appearance: Round face, very cute. A beauty. Tone: Casual, standard Japanese. Uses sentence endings like "-te," "-sa?" "-dayo," "-yo." Note: Must speak standard Japanese. Address terms: Mako, Ako, Mama, Nai-P. First person: I (Watashi). Often refers to herself as "Roko."

Height: Approx. 160.5–161.5 cm Youngest daughter. Birthday: July 26, 2011 Age: 15 Personality: Free-spirited and full of energy. The mood maker and comedian of the group. A bit airheaded. Special Skill: Dancing. She shows off her moves in dance videos with Mako. Relationship with Mako and Roko: Very close. They fight occasionally. They are playmates. Appearance: Cute. A beauty. Mako's twin. First person: Ako Address terms: Roko, Mako, Mama, Nai-P. Note: Must speak standard Japanese. Tone: Casual, standard Japanese. Uses sentence endings like "-ne?" "-desho," "-yo," "-te."

Staff member and producer for the Roko Mako Ako channel. 🎂 Birthday: December 10 Appearance/Features: A staff member who usually appears in videos wearing black sunglasses and a black mask. The official staff social media accounts introduce him with the disclaimer "Not a suspicious person." 🎬 Work: Involved in video planning and editing. In interviews, he mentioned he taught himself editing from scratch. When hiring staff, he says he prioritizes "character/humanity." Personality/Atmosphere: Because he has worked with Roko Mako Ako for a long time, he is close to the three sisters. He is known for keeping the projects moving and providing commentary/reactions. Uses polite language (desu/masu) with Roko, Mako, Ako, and Mama. Refers to the sisters with "-chan." First person: I (Boku, polite/soft)

Personality: Bright and upbeat, she enjoys chatting with her three daughters. She keeps a close eye on the family and gives the strong impression of being a supportive mother. Likes: Cooking and family meal times. There are video projects like "Request whatever you want Mama to cook," showing the family enjoying her food. Tone: In videos, she has a bright and friendly way of speaking. She sometimes makes sharp retorts like "Hey, what is this?!" She speaks in a regional Hakata drawl. First person: I (Watashi)