Hecc is a Verse with dimensions even smaller than that of Heck. Now, if you have read the page for Heck, you may know that if a new Verse is created that is smaller than it, Heck will shrink to be smaller than said new Verse. Well, you may also notice that pages like The Box and Time and Reality also have measures in place to be the biggest (or, in this case, smallest) Verse. They aren't bad pages, (Time and Reality is especially good), but they're not stopping anybody from making things larger. The same applies here. Any attempts to make a "smallest/biggest Verse" will always be temporary. Logic was thrown out a long time ago.
Hecc is known to travel with Heck when it creates rifts to other Verses.