Postman

The postman can be found in Majora's Mask. He is a very concentrated fellow, who takes his job very seriously. He even spends his free time, counting and trying to stop exactly on ten seconds. He won't be interrupted when doing his job and will try and shoo you away. If you play his game and win you might get something special.

Quote from The Legend of Zelda: The Minish Cap Postman figurine:

"A very serious mail deliveryman. He continues to make every delivery right on time every day."

In Minish Cap, Postmen run around delivering letters. Some can fuse Kinstones with you.