The 502th-generation aquaroid is a member of "Blue Storm Fleet", the elite force of "Aqua Force". Her favourite weapons are "HED-018", throwing weapons developed in the process of minimization of hydro engines. These weapons are "darts", in land-dwellers' words, installed with hydro engines to boost their propulsive forces. However, they are costly because they are consumed after being used once, and they are being modified now.
Limpia, who has favoured the usage of this type of weapons since "HED-prototype", has become an expert user who can fight with gunmen and ships using only darts. The darts released from her hands strike down enemies like lightning without a single miss. There is no way to escape from the rain of darts which advance swirling in water currents.