Skeletal Knight

Skeletal knights are powerful Undead that arise to serve more wicked beings - often death knights. Those who become skeletal knights were typically virtuous in life but betrayed their oaths and died in disgrace. Unable to rest, they are now unswervingly loyal to the villains they serve. Should a skeletal knight's master be destroyed, the knight regains its will is free to persue its own ends.
Skeletal knights are relentless in battle and difficult to destroy. They cling to the sins that curse them, and they fight until their skulls are reduced to shards. Their blades deal lingering wounds that sap their victims' life force and leave blackened scars even after magicxal healing.