God
Raoulin could hardly understand the words his father was speaking. But, each and every one weighed on his heart like a booming war drum.
The Ninth Dimension? Even to those of the Morales family it was nothing more than a mythical existence. In fact, even to those of these ever elusive Eighth Dimensional families and organizations, such a level doesn't exist, though many have tried to push past these limits.
There was a reason why Earth, despite 'only' having Eighth Dimensional potential, is still seen as a hot commodity by the Dimensional Verse as a whole.
To put these matters into perspective, as far as the Dimensional Verse laymen are concerned, the Seventh Dimension is the absolute highest. Existences like the Morales family, then, are seen as being the pinnacle.