Tubert

Tubert is a character in Skyward Sword. He is a hairless Mogma who runs the Thrill Digger game at Eldin Volcano.

Biography
Tubert is the entrepreneur of the Mogmas and is found inside a cave located near a Bokoblin village. However the entrance to the cave is blocked by a large piece of rubble and can only be opened if Link destorys the rubble blocking the entrance with a Bomb Flower. Once inside Tubert will pop out of the ground and explain the rules of the minigame called Thrill Digger to Link. He explains the game consists of using Link's Digging Mitts to dig up the large number of Rupees spread randomly across a grid to increase his score, but if Link digs up a Bomb the game ends. Additionally to Rupees which increase Link's score there're also Rupoors that will subtract or decrease his score.