He appears in an angry mob as one of the Bikini Bottomites who wants Filthy Muck out of town.
"The Krusty Slammer"
He appears as one of the prisoners that Mr. Krabs keeps at the Krusty Slammer. After Mr. Krabs sets the prisoners free, the orange fish is part of the group of criminals that enter SpongeBob's house to coordinate a "jail break-in."
He is a reference to Napoleon Dynamite due to at the time Napoleon Dynamite being popular.
The connections are: both having glasses, afro, subtle facial hair, and a deep voice.