I added this to my pinned today bc @the-moon-in-the-gutter had this vision and we've expanded on it.
The Sentry Ghouls were summoned to be Guardians of the Ministry grounds, like a security team. Although this would seem like one of the most important duties a Ghoul could have, they were treated very poorly, as lowly indentured servants. They had their tails cropped to limit their flight, but their wings remain to give them the appearance of gargoyles. As such, they each have varying degrees of balance and mobility issues. They were given a small, unkempt shack as their dwelling, and taught that the band Ghouls were at the top of Ghoul heirarchy. They are a very close-knit pack, with Tellus and Psyche emerging as their alpha pair (though they are not mates). Pyxis is non-verbal and permanently age-regressed.
Since the coup (led by Alpha and Omega) to take control of the Ministry grounds from the (human) Clergy, there has been a return to Ghoul traditions and ceremonies, and one facet of that is that each Sentry stands in one of the Cardinal directions during their rites. Additionally, they were welcomed by the rest of the Ghouls as equals, and encouraged (most prominently by Cowbell, their Elder Multi Ghoul) to integrate into the larger pack. Tellus, Psyche, and Venus found their mates (in Aether, Mist, and Sunshine respectively), and Pyxis was readily accepted by the found family of Earth Ghouls (as Meadow [my OC] is also regressed, and the Earth Ghouls all use sign to communicate due to their inherent deaf/HOH disability).
