Ghouls are encountered on battlefields, as well as in cemeteries and abandoned crypts.
Resistant to common poisons.
Sensitive to silver and Necrophage Oil; the Strong Style is most efficient against ghouls; experienced witchers use the Group Style while fighting multiple ghouls.
A group of ghouls will try to knock an opponent down, surround him and start eating him alive.
Abomination lymph, white vinegar, and ghoul blood.
Ghouls are said to have been humans who were once forced into cannibalism and, after many years spent in dark crypts, underwent a horrifying transformation. Only human flesh can satisfy their eternal hunger, so they kill people and store the remains in the recesses of their lairs.