The Jovian is a spiritual force that seeks to keep Prometheans trapped on the Pilgrimage, never completing it but never outright abandoning it like the Centimani. It is a seductive force, luring the target to staying within the status quo through deceptive advice or indirect troubles. None know the precise nature of the Jovian. Some claim it is a fallen Qashmallim, some say it is merely another facet of the Divine Fire.
There are no known ways to kill it permanently, therefore the only way to remove this influence from a Promethean is to get rid of it. This can be done in a variety of ways, some of which include moving it to another Promethean, making the cycle continue.