K1-B0 (キーボ), also known as Keebo, Ki-Bo, or Kiibo is a student in the Ultimate Academy for Gifted Juveniles. His title is the Ultimate Robot (超高校級の「ロボット」 lit. Super High School Level Robot). K1-B0 is a robot, therefore having a fully mechanical body structurally engineered to, in shape, resemble a human being. His body is mostly made up of metallic, armored plating, not wearing actual clothing, but resembling a gakuran, a school uniform worn by male high school students.