An Invader taking on the form of a massive scimitar, Swordeist is carried onto the battlefield by a large machine known as a responder unit that has a pink hue to it. The responder unit allows her to perform additional attacks, move across great distances and even comes with built-in repairing technology, but is operated by a simple AI.She shows great interest in swordsmanship, having traveled to Earth to meet the swordmasters there. She is very chatty and sensitive about her body.