Sen'you Yaibatou (ラクシャータ・チャウラー, Yāibatou Sen'you), 28 years old, is an scientist and the head of The Order of the Yasuragindou' research and development team. He has extensive experience in medical cybernetics. Sen'you is not fond of speaking of the past, but it is known that he studied at the Imperial Colchester Institute. He affectionately refers to his technological creations as his "children" and treats them with such care. He is never seen without his cigar. Upon the formation of the UFN and the reorganization of the Yasuragindou Knights as its military force, Sen'you is designated as the Chief of Science, similar to his previous position within the Yasuragindou Knights.