SCP 3288 link: https://scp-wiki.wikidot.com/scp-3288

A quick (not really) summary:

Descendants of the Hapsburgs who were hidden from wider society by their less horrific-looking relatives, the Aristocrats continued to inbreed beneath Hapsburg dwellings.
However, due to an anomalous gene that was put in their blood by Leopold the First (Hapsburg ruler of the HRE, Hungary, Croatia and Bohemia), inbreeding isn't harmful to them in the same way that it is for regular people.
Aristocrats generally have longer lifespans, higher fertility (most female members of the subspecies give birth to whole litters every few weeks), lower frequency of stillbirths, stronger immune systems and are much physically stronger than regular humans. They also often reach much larger sizes, such as one picking up and swallowing a grown man whole. They reach physical adulthood much faster than normal humans, usually taking only 16-20 months.
Despite this, they are all mentally unstable, prone to violence, have cannibalistic urges and are still very much deformed - most likely spending much if not all of their long lives in a great deal of agony due to these deformities. Their fecundity is kept from resulting in a massive population by them killing and eating one another, especially newborns, even more often than they eat regular people.


A quick (for real this time) summary:

Hapsburgs did a anomaly-science on some of their inbred relatives and hid them for centuries. Said relatives made even more inbred descendants who became more monstrous over the generations due to the anomaly-science, which was supposed to prevent the side effects of being inbred but instead amplified them so much that they kinda ended up being useful, mixing with them being ridiculously inbred.


There is also a previous "Aristocrats" mod, made in 1.5, but it doesn't add much and is kinda cringe ngl. I made that back when I wasn't as good at modding as I am now. I made this a new mod rather than update the old one cos I can't update the old one lmao I goofed up the "descriptor file" and it refuses to update. That shouldn't happen to this mod since I know how I did the goof and (probably) won't do it again.