Imusa
イムサ
A bald-headed pilot of Efy Dolgh. His Geoframe is designated Lock Head by the U.N.
During the counterattack Refil combines his Geoframe with his, but both are defeated by the teamwork of Kennosuke, Yukina, Sophie, Tom and Muetta and while Refil manages to escape, he’s dies in the destruction of the Geoframe.