Herman Post is Jon's mailman.
Garfield constantly torments him by ripping off his pants and leaving him shredded and scratched, and he perpetually tries to find a way to deliver the mail safely, but rarely succeeds. He is the mailman for Jon's neighborhood because no one else will put up with Garfield's tricks.
- He succeeds in delivering the mail safely by folding the mail into paper airplanes and throwing them at the house, to which Garfield replied, "NO FAIR!".
- Possibly non-canon, the mailman succeeded in a splash screen, which had him in a gi and a black belt and Garfield in a defeated position.
- He succeeded by wearing a suit of armor.
- He brought his assistant Waldo, who then jumped on Garfield.
- He brought Fido, a snake.
- Garfield tries to steal Herman's letters as the Caped Avenger (one of his alternate forms) on March 30, 1979 and fails.
- He succeeded by bringing in his big dog against Garfield.
- He once dumped the mail in the mailbox, but while running away, he ran out onto the street and got hit by a car.