Milky is a female Chihuahua Jewelpet originating from Jewel Land, embodying the concept of sympathy. She possesses pale blue fur, light pink inner ears and chest fluff, and distinctive mint-to-tea green jewel eyes crafted from milky quartz. Her design features a light green bow around her neck and a light green or yellow frilly cap. Speaking in a Tohoku dialect and typically ending sentences with "desu," she exhibits a timid yet kind personality with a deep adoration for cute things. Her magic allows humans to empathize with others' misfortunes and offer gentle support.

Her first appearance occurs in *Jewelpet* (2009), where she assists the cursed human Chie, removing Diana's antagonistic influence. She later works as a waitress at the Strawberry Café alongside Jewelpets Peridot and Luna. During *Jewelpet Twinkle☆*, she serves as an assistant to teacher Halite, frequently appearing with Luna and occasionally Peridot. She travels to the human world with protagonist Akari in one episode and becomes a commentator for the Jewel Star Grand Prix alongside Luna.

In *Jewelpet Kira☆Deco!*, she operates as a sweet potato seller who delivers prophecies about the world's end and narrates specific episodes. For *Jewelpet Happiness*, she cares for a dragon wrongly accused of causing disturbances at Jewel Academy, steadfastly defending him despite suspicions. Background roles in other series involve minor appearances alongside recurring characters like Luna. Her birthday is April 8.