Death Eaters Headcanon:
They were mainly divided into action squads and Ministry spies;
Bellatrix was the first female;
Beneath Dolohov were Voldemort's three other roommates, Mulciber, Rosier, and Nott;
Below are still schoolmates from other years Lestrange, Avery and Macnair;
The seven schoolmates were often called Knights by Voldemort in private, precisely to remember their first name;
The masks are made by Voldemort similarly to how Wormtail's hand was made and each mask has a different design because Voldemort needs to recognize them even when their faces are covered;
Bellatrix was General and head of the action team, Dolohov before Azkaban was in charge of the Ministry, then he became Bellatrix's second in the action team;
Voldemort's favourites were Bellatrix (obviously, his pupil and his woman), Dolohov (his closest friend from Hogwarts), Snape (because of family and character similarities);
He never liked Lucius much but being close to the Minister;
Snape was in a special position, he was a spy in Hogsmeade and Voldemort immediately liked him;
All the male children of the Knights became Death Eaters
