If so, that guy, Rocky, AND the SECOND appearance of Nosferatu in the post-sequel episodes prove that SpongeBob relies too much on old characters. ESPECIALLY Nosferatu. His appearance in Graveyard Shift is all we needed. Using him in The Night Patty broke the joke, and this is the six feet of dirt on top of it.
Look at Space Ghost. They didn't bring back characters like Your Mother or MOE 2000, or even Leonard Ghostal, in later episodes. They did bring back Sisto in The Brak Show, but he's actually related to Brak and could serve a major role in the Space Ghost saga. I do wish they kept Chad Ghostal one-shot, though. Being an evil beatnik is funny and all, but I prefer his original voice in "Jerk" to his voice in subsequent appearances. Even Swayzak from Toonami wasn't ever brought back, aside to being the punchline to a joke in a game review two years later. (And as much as I love that character, I understand why he won't come back.) Tansit was a one-shot character in the 1960s Space Ghost cartoon as well.
Things randomly appearing is SpongeBob in a nutshell. So why are they killing the joke by bringing Nosferatu back? I swear, the day they bring the Volcano Sauce Drop back is the day I commit seppuku. (Oh god, I shouldn't be giving them any ideas...)