The GR4VES1NGERS were born out of a necessity to care for the shells that inevitably pass. Even if ones consciousness has been transcended to exist in the metaverse, there is a process that one has to endure with the passing of their mortal body they used to inhabit. Though the spirit is now free to roam, the losing of the mortal part you were brought into this world in can be a traumatic experience - almost like losing your childhood home. There are also those who wish to depart this mortal coil together with their physical form. To live like those who came before them, bearing the heaviness of accepting your own mortality.
GR4VES1NGERS take care of the body to give it a proper burial and at the same time support the wandering consciousness - be it in the metaverse or the ethereal - with their rituals and chants. The bodies can only be buried by someone connected to the spirits of the ancestors and the wandering soul needs someone to care for them. In a sense they are acting as the equivalent of the loving caretakers that helped them enter this world, now giving them the opportunity to let go and enter a new realm of existence.