Many different people with the name Postman can be found in the Zelda series. Although different, all the postmen are very dedicated and usually can run faster than most people in the game.
The first Postman appeared in Majora's Mask. He was the Terminian counterpart of the Marathon Man in Ocarina of Time. Since then, a lot more people have appeared in the Legend of Zelda series with the title Postman.
A common attribute of all the Postmen (and the Marathon Man) is an image of a rabbit. The Marathon Man bought the Bunny Hood from Link and wore it from then on. All Postmen have the image of a rabbit on their hat and flag.
The Postman is a dilligent worker in Clock Town, obsessively sticking to his schedule, even though it soon conflicts with his urge to flee as the moon threatens to annihilate Termina. Eventually Link can earn the Postman's Hat off him, which allows him to check the mail boxes around the town. His strange attitude and voice sound effects ("Ya!") always made him one of my favourites, plus he's a very good example of how the time system of Majora's Mask really adds depth to the game. Like many characters he had an alter ego in Ocarina of Time, the unbeatable Running Man who you could 'race' as adult Link.
Parts of the head and body are quite detailed, but in my scale, he's actually quite tall, with a large head and hands which makes things not as bad as they had potential to be. Still experience is probably needed.
The paper model is from http://hyrulepapercraft.blogspot.com