Batsu
An ancient nanocomputer that existed on Earth for 600 million years, Batsu (バーツ) watched over the newly born planet until humanity came into being and disrupted the natural order. As he attempted to steer their actions in the guise of various deities, Batsu came to the conclusion that mankind must die so the Earth can be saved. In the form of a mermaid of light, Batsu enters Obuchi's body and amplifies the man's malice, giving him the means to create the Neo Thera. After Daen's defeat, Batsu left him and assumed the guise of Maen (マーエン), a female solid hologram with a moody spoiled brat persona dressed in Gothic Lolita fashion. Claiming to be created by Daen, Maen uses the Executives to continue where Daen failed, making the call for a Zukcrane to be activated.
Upon defeat, Maen leaves for the next town with a new recharge for the Executives once they make it to her location to start anew. Maen eventually reveals herself to the Rescue Force during the Kurei City incident, suggesting a Super-Disaster Title Match with the promise to stop her attack on the city. However, she adds a second round involving the Zukcrane causing the disaster. Later at Academia City, Maen attempts to have her Zukcrane take out the Rescue Max in a diversion while the executives obtain the Omeganium she requested. Once getting it, she uses both it and them to complete her Omega Zukcrane to carry out her master plan. But the plan goes awry when she is forced to directly link up to her creation, going down when it is destroyed. Maen also aided the insane Mataro Madano/Dr. Mado, but regretted her choice of teaming up with a human when he screwed up.
Deciding to finish things and achieve her goal, Maen uses a mass firestorm to lure Super Rescue Max Crane into executing its Final Rescue, taking in enough energy to finally discard her guise and assume her true form as Batsu before scattering its being across the planet to commit global-scale genocide of the human race, while the main body remained in Japan with a barrier around it. Though the Great God Striker is able to pierce the barrier stop Batsu's plan, it was a step ahead of the UFDA's attempt with its unforeseen ability to regenerate from even the smallest remains making the battle seem hopeless. However, refusing to accept defeat, R1 and the Rescue Striker manage to enter Batsu's body and destroy it from the inside out.
Batsu's name comes from the Japanese word for "X" (バツ), seen by the cross mounted on its back, while Maen's name comes from the Japanese word for "circle" (真円).
