Buzzling

Given a second chance, Buzzling became Rosetta's CUB. It's extremely curious and a bit mischievous—almost like a sprite from old legends. To Buzzling, the world feels like one giant playground of signals, and it often pulls small, harmless pranks.

Buzzling also has a few habits people can't quite explain. Every morning at the same time, its body lightly vibrates in a steady rhythm for three minutes, making strange sounds along the way. Rosetta simply explains, "That's its morning exercise."

Buzzling was created at a major astronomical observatory run by the Arctic Route Union during the Golden Age. Born from casual talks between brilliant minds, it was designed to help detect signals from space—electromagnetic waves, gravitational waves, and more.

As staff changed over time, new members continued to modify and upgrade Buzzling, steadily expanding its intelligence and capabilities. On the observatory's photo wall are group photos of Buzzling with generations of researchers.

That peace didn't last. After the Punishing outbreak, the observatory was abandoned. Everyone was struggling to survive—no one looked to the stars anymore. The station stood empty, with only Buzzling left behind, still picking up signals from deep space. With no one around to take care of it, its power slowly drained and its systems began to fail. Then, in its final moments, Buzzling's damaged sensors caught sight of someone entering the observatory. A Construct named Rosetta had found it.