Orbital 4 is a satellite controlled by Orbital 7.
After falling in love with Lilly, Orbital 7 erroneously believed that she was being treated as a slave by Yuma Tsukumo. To win her freedom, Orbital 7 challenged Yuma to a Duel, but loses. Having expected this as a possible outcome, Orbital 7 then ordered Orbital 4 to fire its laser from orbit at Yuma, but Lilly is nearly caught in the blast. Orbital 7 managed to push her to safety, leaving only Yuma to be hit by the beam. The explosion left a crater in the ground, but outside of minor burns and having his hair charred into an afro, Yuma is not seriously harmed.