Blue
Ravenous Bugblatter Beast of Traal
If I recall correctly, back in the 90s White Wolf's Vampire had Willpower that you could spend & lose, and each character had a outer and inner aspect. The outer was what others saw about you, the inner was your true self. Playing to either of those aspects would restore lost Willpower. 25 years before D&D's Inspiration, and with Willpower being important even back then much more a foundational part of the mechanics than the bolt-on of occasional Advantage.