Lord Royal Highness has multi-colored eyes, green and blue. The late David Bowie, who voiced him, had one permanently dilated pupil, which many mistook as heterochromia iridium.
As Sandy is running with a periodic table as the background image element 111 has the year 1994 and element 112 has the year 1996. These refer to Roentgenium(Rg) and Copernicium(Cn) discovered in the years stated in the periodic table.
David Bowie was such a huge fan of the show that, once he was offered a guest appearance, he agreed immediately.
In the original airing, the Patchy framing scenes were absent.
This is the first one-hour special of SpongeBob.