Nanao Löwe Shishishima (獅子島・Ｌ・七尾 Shishishima Rēbe Nanao) is a character in Z/X -Zillions of enemy X-. A returnee girl who has a hobby of inventing mechanical robot while being able to use ninjutsu due to the influence of her German American scholar father and Japanese kunoichi mother. She was chosen as the pilot of Blue World's cutting edge human-type giant robot, "Synchrotron" to succeed the current Super Steel Regalia, Lawrencium. Her code name is "Seventh Tail".