Fairy Knight Gawain, also known as Barghest, is a loyal soldier from the Clan of the Fangs serving Queen Morgan in the Lostbelt. As a black dog faerie with a warlike nature, she struggles against her instincts to devour those she loves, requiring regular predation on lovers to avoid berserk madness. Despite her twisted mind, she shows regret and growth, such as after clashing with Tristan, whom she respects for his strength. She engages in deep conversations, like with Mash about knights, revealing a complex character torn between duty and feral urges.