True World Of Darkness
Geists in the Underworld are rare. This is because unfettered geists don’t have to be in the Great Below. Most geists who are not bound are in the living world, looking for someone to make the Bargain with. Geists in the Underworld have usually come for a purpose. Some seek power, some seek safety, some seek knowledge and others seek peace. A geist is more powerful than the average ghost, not bound to repeating patterns, typically more sane, less human, and able to use all of their powers done in the Deeps. Some geists may become lords of their own Dominions, or have armies of ghosts serving them. some hunt other geists to cannibalize them and absorb their powers. Some geists seek the secrets of their own pasts, while others search for great mysteries.
Like ghosts, unbound geists are solid in the Underworld. All of their manifestations work and are much more powerful than above. Unlike ghosts, they can cross any river they wish, and go anywhere they like. They must still recognize the Old Laws unless a dominion’s Laws say otherwise. If a geist is destroyed in the Underworld, it is ejected through the nearest Avernian Gate into the living world. However, they must bond with a sin-eater before the next sun-rise or sun-set or they are discorporated forever. Geists cannot be summoned in the Underworld.