Grey is a robotic monster. From far away, she usually appears as a humanoid figure with a smooth metallic surface. In reality, she consists of many microscopic robots that work together as one organism. As such, she can reform her body. She can use the robotic organisms to assimilate weaponry into her form and use it instantly. This feature is used by her trainer, Paradigm, to showcase his latest weaponry. Many people have been beaten by some weapons used by Grey where they later bought them from Paradigm.

Grey is also one of the most well-trained monsters. Her trainer is not afraid to be near her, and often closely interacts with her. Even after a fight, she automatically stops attacking without anybody using any Xenon anaesthetic on her.