Megamogus are Supermoguses, but in thousands of years in the future. They are bigger, smarter, stronger and scarier. Now they can even defeat an Immortalmogus in a 1v1, but obviously they cant kill it. These beings have *A* kardashev scale of 5, more closely 5.1. They also grew extra long legs, that makes them go a lot faster than before.
The most advanced and privilegiated Megamogus can even travel to the 4th dimension, and one of them is the Megamogus leader, ªmºgus 𗀄𗀃𗀄𗀄 ¶2. This doesn't means that they are completly 4d entities, just some kind of "guest" to that dimension.