Not sure if this is something you can change but there is a factual error on the Black Knight’s character sheet. It states under Power Slider:
Power Slider (Blood Curse): If the user gets a Fantastic success on an attack with this weapon and causes bleeding, their powers are boosted. However, they also gain the Bloodthirsty tag. If they kill someone while Bloodthirsty, they lose their Heroic tag.
Bloodthirsty is not a tag, it’s a trait.