His name is Peater, a swordsman who is
Peater is a character in Skyward Sword. He is the overprotective father of the Item Check girl, Peatrice. He tries to protect her from amorous boys, like his younger self.
After graduating from the Knight Academy, he went off to become a pop idol. When he retired from being an idol, he gained considerate weight. To lose this weight, he put on his old gear and started cutting bamboo. He is found on Bamboo Island, the island with a huge bamboo in the center. If Link talks to him, he asks Link if he wants to take part in the Clean Cut mini-game, adding the challenge of seeing how many cuts Link can get before the bamboo falls.