The humans are short lived and greedy creatures, like lice infecting the world with their disease-ridden numbers. Like most sentient creatures, however, family is exceptionally important. A human’s heritage is a part of their identity.
That’s why you took the prince’s face after you defeated him in battle. You wanted the royal family to fear you and your ferocious might. Wearing your Human Trophy Mask has caused quite a commotion in the human ranks.