Bangboo is a small, rabbit-like robotic companion in Zenless Zone Zero, used throughout New Eridu as a helper, courier, and support unit. These machines are common in daily life and field operations, often assisting agents with navigation, logistics, and combat support. Bangboo itself is not a single unique character but a recognizable robot type and mascot-like presence in the series. It represents the practical, tech-heavy atmosphere of the setting and often adds a cute, approachable contrast to the game's more dangerous urban world.