Melman

Melman is an elderly Cappy and the one mailman of Cappy Town. Based on his knowledge of where people live, one can infer that he has a good memory. In the episode "Born to Be Mild - Part II", it is discovered that he is also the legendary biker, Steppenwolf.

In Waddle While You Work, Melman claims that King Dedede gets a lot of bills before putting it on a shelf. In the beginning of Like Mother, Like Snail, he gives Escargoon a letter while saying, "just the usual love letter", supporting that he reads the messages he delivers.

To date, his younger personality remains unknown.

Trivia

 * His name is based on the word "mailman"; after all, that is his job.
 * In one of the episodes of the anime, Melman swears he doesn't read any of the letters he is supposed to deliver. Strangely, in another episode, he mentions that he looks over King Dedede's mail before mailing it to him.