Grog

Grog is a character who first appears in Ocarina of Time, where he can be found in Kakariko Village when Link is a child. He sits underneath the tree near the village entrance at night. He is Mutoh's son, Anju's brother and a bit grumpy (or perhaps angsty, given his punk rock look). He appears to have some kind of relationship with the potion shop lady.

When Link is an adult, Grog is found in the Lost Woods. When you come back to give him the medicine, Fado is there. She explains that due to the fabled curse of the woods, Grog may have become a Stalfos.

In Majora's Mask he has a completely different role, and now has a Mohawk hairstyle instead of his previous bald look. He is the owner of the Cucco shack and loves his chicks, but when he hears the rumor that the moon will fall on Termina in three days, he is filled with sorrow as he understands he won't see his chicks develop into chickens. By playing the Bremen Mask song, you can help him to see his chicks grow up.

Trivia

 * In common day usage, grog is slang for an alcoholic drink, originally composed rum and water, known for being a popular beverage among pirates.