Universe hypergroups, or Universe filaments, are massive groups of universes that compose around a thousandth of a multiverse. The size of a universal hypergroup is unpredictable due to constantly moving energy barriers, so it varies between lots of sizes. A universe hypergroup normally contains hundreds of universe supergroups. The largest universe hypergroup in our xenoverse is JXR-2011-63871PFVRa16. The average universe filament contains 14,000,000 universes.
It is also the largest known class of gravity-bound structures within the Multiverse.