Comments posted to our Dark Souls 3 Wiki
The headless ones will auto-parry when they are "blocking". Two-handed ultra weapons will still be unparryable, though. These "crownless parry kings" are a good way to test if an attack is parryable.
I don't know if this is the right page, but the skeleton at the beginning of the catacombs dropped a vertebra shackle. Did this happen for anyone else or just me?