In this episode, SpongeBob gets his mail from Norton while he is working on his boating school essay. SpongeBob tries to waste time by asking Norton about where he gets his mail from, before Norton reminds SpongeBob that he has an essay to write.
Norton goes to Squidward's house to deliver the invitation to Galleria Diphteria and tells Squidward what the plus one means. Later, when Squidward is looking for a friend, he finds Norton, who says he is more of an introvert than a kidder. Squidward finds out Norton also likes toast point and fancy art galleries, but after Norton reveals that he hates clarinets, Squidward leaves, and Norton gets upset.
(to SpongeBob) "All right, do we have to go through this every time I deliver your mail? Sheesh!"
"Oh, if I weren't already on parole."
"Actually I'm not a kidder, I'm much more of an introvert."
"When's Norton's time? When's Norton's time to shine?!"
"Stupid, stupid, stupid!"
"Don't you have a paper to write?"
His design resembles that of Peterson Nat Tucker, but colored orange and purple, and with the mailman uniform. Also, his dorsal fin is pointier than Nat's.
Season 2 episode 9 in Bikini Bottom Mysteries talks about Norton being anti-social and trying to be more like Squidward.