After all, he couldn't possibly go above ground in the guise of a River God and attempt to unify the many rivers. Not to mention whether the Divine King would object or how the Lord of Ocean would react, Styx alone was an insurmountable threshold for him.
So for a considerable amount of time, Charon was just an idler in the Underworld.
Hades initially thought so as well, even for himself who was short of help, Charon really didn't have much of a presence.
This situation continued until the Typhon disaster, when the wraith Evans reported to him a discovery, marking the first time the River of Sorrow had actual significance. (See 3-168)
After personally making a significant effort to seal the "Silence Crown," Hades who finally located the entrance to the Land of the Dead, Helheim, encountered trouble once again.
In this alien realm, filled with the aura of Death, he faced rejection once again.
