Tanktup

Tanktup is a character found at Bubble Gloop Swamp in Banjo-Kazooie. He is a large, green turtle. He complains about having cold, numb feet and asks if Banjo and Kazooie can help him. You must use the Beak Buster ability on his four feet to make him pull them inside his shell. He will then open up his mouth for you to travel inside. Tiptup and his choir are here.