Sanguine Sisters

The Sanguine Sisters were a group of four Hogwarts students: A Gryffindor, Virginia Fawley, a Slytherin, Ayumi Deokha, and two Ravenclaws, Briar Montgomery and Inala Kokomikeis. The four attended Hogwarts School of Witchcraft and Wizardry from 1972-1979. Whilst existing at Hogwarts at the same time as the Marauders, they tended to lean into less ostentatious displays of rule breaking. Rather than create chaos, they chose to cut corners and master secrets in order to make their time at Hogwarts more fruitful, both mentally and emotionally. During their time, they also invented the Animo Auris, which allowed them- and others- to stay in constant communication; as well as assist in the making of the Marauder's Map.

The Sisters would all go on to fight in the First Wizarding War and some in the second. They were also participants in the original Order of the Phoenix, an organization lead by Albus Dumbledore in the struggle against the Dark Lord, Voldemort.