This Spirit Lee Koo is a brilliant child prodigy and engineering expert who works for the Outfittes division of BLADE, tasked with the creations of weapons, including the enormous mechs known as Skells. Aside from tinkering with machines, she also enjoys cooking, and often jokes about cooking and eating the Nopon Tatsu. Despite her young age and small physique, she can deftly wield heavy weapons, such as Gatling Guns and Shields.