Mamoru's grandfather is the paternal grandfather of Mamoru-kun and the captain of the International Rescue Team.
Mamoru's grandfather is a heroic figure known as the "Legendary Rescuer", travelling around the world helping those in need. He has been missing since the Great Calamity hit Nipon, though there have been reports of him being seen in various places. Rumors say that he is pursuing what had caused the Great Calamity which point to the Earth Dragon.
Mamoru's grandfather is a gruff-looking and bearded Caninu dressed in elaborate Rescue Ranger attire. Layered on top of his uniform is a tattered cape, adding a mysterious demeanor.
|Main Characters:||Mamoru, Matoi-chan, Tasuku Yashima, Mamoru's grandfather, Mamoru's mother, Nyanja, Monja, Earth Dragon|
|Supporting:||Kenta, Tamao, Wabisuke, Futaba|