성별 : 정보신청
생일 : 정보신청
키/몸무게 : 정보신청

Youji Hiyama (火山 洋二)A student at Harukaze Elementary School, Class 6-2, which is nicknamed the "Saurers."

He takes charge of the information analysis on Mach Ptera or the strategy and analysis on Gosaurer. Youji becomes the pilot of Grantops later.