There isn't a "Great Black Hole" in the Spectrobes universe. There are black holes in the game, but they're not given a specific name or designated as a major plot point.

The most notable black holes in the game are:

* The black hole in the center of the galaxy: This is mentioned in the game's lore and is what the Spectrobes use to travel between planets and galaxies.

* The black holes in the game's levels: These can be used to quickly travel to other areas of the level, or to reach otherwise inaccessible areas.

However, there isn't a single, named black hole that stands out as a major focal point in the Spectrobes storyline.