Lukas the Mail Carrier only had one mailbox he really didn't like delivering to. That box was at the residence of Mortimer the Electric Eel. But, Lukas was dedicated and swam through his angst. Mortimer ordered a lot of stuff, so, Lukas was delivering packages a couple of times a week. Mortimer was a prankster and Lukas was his primary target. There's nothing like getting the crap shocked out you according to Mortimer!