A term used to describe the character trait of Spongebob in some modern episodes, often from Seasons 6-8 where he is an overly obsessed stalker of Squidward Tentacles. The “cubic creeper” is often seen peeping on Squidward while he’s taking a bath, taking peeps inside his medicine cabinet, leering at Squidward while thinking about being “together forever” and stealing vacuum cleaners to force Squidward to “visit” the inside his house.
The cubic creeper snuck into Squidward’s abode so many times that he was able to replicate its interior layout to the tiniest detail.