Been fiddling with these for a while. Final personality aspects will manifest themselves with time and further exploration, but for now…
 
As Ponykind evolves, so does its predators and monsters. For the most part…
 
Marasmus: Daughter of Miasma. Operates a bunch of orphanages and poorhouses in Las Pegasus and mainly feeds off the love of foals who have no one else to turn to. Occasionally other changelings of the hive will adopt someone to feed off of. Marasmus herself is a bit haughty and gruff, but mostly fair to those around her. As many other new hives, she’s learned that it’s better to take only little bits here and there instead of indulging too much at once. Indeed, some hives have even learned to work together! Such as is the case with Marasmus and
 
Malafide: Daughter of Myxine. A big star, producer and talent agent in Applewood. You want a job, you go to her. Well, she’s not the only one and she got into the role by overtaking some starlet’s villa in her youth, but she knows her way around. She may act sweetly and understanding, but underneath that she’s an ice-cold business woman. She’ll condemn you to a lifetime of being the lighting guy with the same smile as the one where she makes you the next big thing. Likes to use the occasional husk for extra risky stunts and collaborates with Marasmus when it comes to runaway foals who want to make it big in the film biz. Feeds off the love of her protegees. Her hive members constantly swarm the city in search of new talent, de facto victims.
 
Boitata: Daughter of Calliphora. Makes her home in deep forest, swampy areas where she gathers love by first getting ponies lost and/or stuck and then rescues them again. Almost entirely nocturnal as she mostly uses light to lure ponies deeper into the woods. Can’t see well by day, but not half as bad as her mother does. When she’s bored she likes to scare ponies by making buildings - especially old wells - seem haunted. Usually covers her face with her hair and spends most of the day lying in shallow pools. Her hunting methods constantly get her in conflict with
 
Photuris: Daughter of Ambrosia. Uses the same hunting method as Boitata, but is more disciplined than her and can see just as well by day. Instead of waiting for lone individuals to come by, she and her hive members will often wander into villages in disguise to find out about travelling parties that they can lead astray. Inquisitive, but without the cruel streak her mother has.
 
Notes:  
Credit for the initial idea of Marasmus goes to LiliLovesLili. Big thanks!  
These hives would come into existence about 50 years from now, give or take.
 
Edit: Now with Chrysalis’ daughter!