Oyuki Yukino is a supporting character in the anime and manga series Urusei Yatsura. Known as the queen of Neptune, she is a calm, elegant, and graceful alien with long blue hair and a serene demeanor. Despite her icy powers and cold exterior, Oyuki is gentle and often serves as a mediator between the more chaotic characters. She is a close friend of Lum and plays a recurring role, providing both support and comic relief throughout the series.