After Corey was pulled into the coffin of the last Prince of the Letherions, he could no longer watch what was occurring above the Black Sea.
If he could, he would have been awed and surprised by the scale of destruction he would have seen occuring on the Black Sea.
With the appearance of the Titanic Abomination, every Outsider- Chosen, Elders, and Guardians. The Underworld Officials and the Demons saw the Titanic Abomination not as a being that was to be feared, but as a treasure trove.
They had never seen an abomination or a creature like the Titanic Abomination, but they all knew that it was above the Mystic Realm.
Without thinking too deeply about it, they all assumed that the Titanic Abomination was a Tier 7, although, an extremely weakened Tier 7.
However, what they did not know was that the Titanic Abomination's true power level was far beyond Tier 7.