The Queen Harpy is the ruler of the harpies close to Happiness Village. Because harpies need to reproduce to survive, the Queen Harpy ordered her fellows to kidnap men from Happiness Village and mate with them; she was generally against that idea, but knowing the men would instantly refuse, the Queen had no other option than extinction.
In Chapter 1, Luka aids the women in Happiness Village and sets out to defeat the Queen of the Harpies. She does not fight seriously; choosing not to dodge Luka's blows which she deems as fighting "in a sloppy way”, and Luka as a result overcomes her. He then summons the human women to raid the village, but the Queen Harpy refuses to give up the kidnapped men. Before Luka can seal her, the kidnapped men rush to the Queen Harpy’s side and defend her, revealing that they were only taken for reproduction purposes.
Nightfall comes, and the humans and harpies come to a conclusion: the harpies will no longer kidnap men and the women will send men from their village to marry harpies, in return the harpies must help with Happiness Village’s farming and beekeeping. The next morning, the humans and harpies wish Luka and Alice goodbye and good luck on their journey of creating coexistence. As they prepare to leave, the Queen Harpy stops them, indirectly asking Alice if she is the Monster Lord, but Alice merely replies that she is just a traveling gourmet. The Queen Harpy understands and does not ask for further details, leaving Luka dumbfounded.
In Chapter 3, when Ilias's forces attack Happiness Village, Queen Harpy leads counterattack against the chimeras outside of the village. Calling upon techniques and tactics utilized by the previous Harpy Queen, the Large Wing Battle Formation, her harpies route the chimeras while she urges Luka to defeat the Trinity. Even though they successfully repel the invasion, Queen Harpy laments her lack of strength compared to her predecessor, but Alice reminds her that previous queen's warmongering and ambition ended up harming the harpy race and assures that her gentle leadership is what they need. She then thanks Luka and Alice and prepares for a second invasion.
