Erufuda, often referred to as Elf, is a main character in the comedy manga series "Elf-san wa Yaserarenai." She is a high-spirited and energetic elf who struggles with her weight due to her love for junk food, particularly French fries. Despite her challenges, Erufuda remains optimistic and determined to lose weight to return to her home world. Her character adds humor and charm to the series as she navigates the human world, forming friendships and learning about healthy habits.