Astarotte Ygvar, often referred to as 'Lotte,' is the main character in the anime series 'Astarotte no Omocha!' She is a young succubus princess who initially resists forming a male harem, a requirement in her world to sustain her life force. Despite her brash personality, Lotte is shown to be kind-hearted and vulnerable, struggling with her duties and the expectations placed upon her as a royal figure. Throughout the series, she learns to open her heart, especially towards Naoya, a human who becomes a significant part of her life, helping her grow emotionally and socially.