Mari Aikawa (相川 麻理 Aikawa Mari): An Academia student studying on the powering suits for space travel with Yuusuke Amamiya, Jou Oohara, Megumi Misaki, and Takuji Yano. The older sister of Jun'ichi Aikawa. Her suit featured a dog. She was also working on the plans for the Bison Liner and the Rhino Fire before her death. In the Gaoranger vs. Super Sentai Yuusuke is found visiting her grave.