Nameless King's power was known to every strong enough creature. Not many had had to fight him, but almost everyone knew of his jaws and their properties.
The main purpose of Nameless King's jaws was to pass through and destroy any barriers and obstacles in its path. Ereg's arm would have been torn to pieces of flesh if Wain's jaw had gotten the ability to tear it as long as Gael's.
Gael's jaw did not possess such powerful destructive power. After all, Ereg's body was one of the strongest in the world because he was a Beastfolk.
However, Gael did not look upset, for he had accomplished his task and let his jaw absorb some of Ereg's blood.
Of all the creatures living in this world, many used blood as their weapon, defense, or even healing techniques. Vampires and their fangs came to mind, for to them blood was everything - attack, defense, health, magic, and life.