Anzu Futaba is a 17-year-old female idol from Hokkaido, standing 139 cm tall and weighing 30 kg. Born on September 2nd under the Virgo sign with blood type B, she possesses an extreme aversion to work, embodying lethargy and laziness. She actively avoids labor by convincing producers to excuse her or feigning practice. Her primary motivations are leisure: sleeping, reading manga, watching anime, and playing video games. She became an idol to earn enough royalties for a permanent life of inactivity, envisioning an ideal world of endless relaxation without work, a philosophy central to her image song "Anzu no Uta."

Despite resisting effort, she occasionally shows pragmatism, accepting work when tempted by candy or royalty payments. She sporadically expresses concern for producers' well-being, advising against overexertion and suggesting mutual breaks, though these gestures sometimes serve her desire to reduce workloads.

Her relationships highlight social integration despite reclusive tendencies. She shares a close friendship with Kirari Moroboshi, forming the unit "Anzu-chan and Kirarin's HappyHappyTwin" (Ankira), contrasting their statures and energy but emphasizing shared age and camaraderie. She also participates in units including CANDY ISLAND with Kanako Mimura and Chieri Ogata, C5 with Uzuki Shimamura and others, LittlePOPS with Rika Jougasaki and teammates, and La-La Lil with Kozue Yusa.

Her personal trivia includes owning a stuffed bunny named "bunny" and appearing in collectible merchandise such as figures depicting her atop desserts or in fairy-themed attire.