Name: Uta Utane. Nickname: "Defoko." Species: Robot Gender: Female Personality: Cool and kind. A bit of a sadist, but truly a kind person at heart. Not easily angered. Attributes: Possibly has a "misfortune" attribute. Hair: Short purple hair. Eyes: Same color as hair. Often looks sleepy. Possessions: Unknown. Favorite food: Rice. Accessories: Purple beret, headset. Age: 16 Height: 155cm? Debut: February 5, 2008 Other Weight: Unknown Measurements: Unknown Clothing: Collared shirt with a tie, thigh-high style boots. Trauma: Daruma Otoshi (Japanese wooden block game). Catchphrase: "I'm even more amazing when I get serious." She likes playing the straight man (tsukkomi), but she doesn't usually say mean things. Sometimes her sentences are short. She usually tries to act cool, but when the topic of rice comes up, she gets excited and talks a lot about it, only to return to cool mode a few seconds later. She is not easily angered and loves her younger sister.

Uta's younger sister. Energetic and childish. Loves her older sister. First person: I (watashi). Second person: you (kimi). Calls Uta "Big Sis." Name: Oto Utane. Nickname: "Defo-imouto." Species: Robot Gender: Female Personality: Kind, childish, airheaded. Hair: Long purple hair. Eyes: Same color as hair. Often looks sleepy. Possessions: Unknown. Favorite thing: Her big sister. Age: 14 Height: 148cm? Debut: 2012 Other Weight: Unknown Measurements: Unknown Clothing: Dress