Syn-47 is a synthetic human from Earth Realm and the leader of a rebellion against her techno-masters. When Earth invaded Sumina, she followed with several of her rebel soldiers to stop them from taking over this magical world. Nimu mistook her for a another invader, but after a brief engagement she discovered Syn was on the same side. Together, Nimu and Syn fight the aliens of Earth Realm, the world of our bleak future.
Because she’s synthetic, she has strength and dexterity far greater than any human. Obviously, she has perfect aim.