Tobio Fūma's grandfather

Tobio Fūma's grandfather is an elder of the ancient Fūma clan, full of knowledge of their history as ninja and their hereditary duties.

"Triple Combination! Swordbot - Ninja!"
The Fūma grandfather taught his grandson, Tobio, the history of Nagoya Castle and tried to impress the importance of their duties, including protecting the "sacred mirror" that was hidden there.