Basteya Irclu is a Sixth Progenitor among the vampires. They took part in the invasion of Shibuya and was tasked with initiating the plan to capture the first progenitor. They were haughty to those perceived as beneath them referring to those as a "stray mutts" or "livestock". Basteya was remarkably calm in dangerous situations, likely due to their power as a noble giving them superhuman strength, regeneration, and nigh-immortality. Basteya is loyal to the Second Progenitor, Rigr Stafford.