Gazetteer - Blood Changeling
Blood Changelings are an elusive race of shape shifters that must kill a victim to gain their shape and memories for a short period of time. A Blood Changeling can only store the memory of a single slain creature in their flesh. And even this wears off in a fairly short duration, forcing them to kill frequently to maintain guises. The limits of their powers are unknown but Blood Changelings have been known to fool the oldest and dearest friends of their victims.
Their origin and how they came to be on Lir is shrouded in mystery.
During the Year of Undoing Garlic was often mistaken for a Blood Changeling. This evidence proves that the creatures have been on Lir for some time.