Marble Bread Cookie is a skilled worker of the Time Balance Department (TBD) who works in the Facility Management Division of it. He’s lazy and doesn’t wanna do much work, but it’s naturally skilled at various things somehow. Later, he got a side job in the Time Studies Division, a secret room at the TBD, where he will do dangerous scientific tests on cookies, even if it kills or hurts them, for the sake of the TBD and future. He doesn't care. He's happy to get rid of anyone who annoys him.