Iners
В русской Вики этого нет, а вот на Лексиконе всё отлично описано
https://www.hp-lexicon.org/creature/human-like-creatures/hag/
Hags are female magical beings with somewhat evil tendencies, similar to humans but less adept than witches at disguising themselves from Muggles (GF19). The book The Dark Forces: A Guide to Self-Protection describes a hag as “a child-eating creature of human appearance, though likely to have more warts than the average witch” (Pm). Information from the 2nd and 3rd W.O.M.B.A.T. tests show that hags eat small children and have four toes on each foot, but have only rudimentary magic, similar to that observed in trolls. The Ministry is said to consider Hags to be “less dangerous” than Werewolves and Inferi (JKR-W2, JKR-W3).

Hags are wild in appearance, and they have been known to eat children (FB, DP4, FW), although at the Leaky Cauldron Harry once saw a hag eating raw liver (PA4). Hags can be quite frightening, apparently, since Quirrell had a “nasty bit of business” with one during his year off for first-hand experience in fighting the Dark Arts (PS5). Interested parties may also consult Gilderoy Lockhart‘s book Holidays with Hags (CS4), which probably can be picked up quite cheaply at Flourish and Blotts these days.

In the mid-1990s, Professor Regulus Moonshine claimed to have discovered a potion to reduce a hag’s craving for human flesh. Moonshine’s extensive injuries — several chunks of his face and neck had been bitten off — suggested that his research had not been without peril (DP4).

In the late 1600s-early 1700s, Honoria Nutcombe founded the Society for the Reformation of Hags (FW).

Как говорится, учите матчасть.