Lilia Vanrouge is the vice-housewarden of Diasomnia. A young-looking, elderly, and wise fae that is friendly and easygoing. Because of his old age, he is very wise and knowledgeable and tends to give advice to his younger classmates. He gives a sense of mystery and tends to tease other students (usually in the form of floating upside down in the presence of unsuspecting students). He was also a former knight of the Briar Valley who now supervises Malleus Draconia.

Voice: Lilia has a mid-deep-ranging voice that is relatively friendly and playful. He can also sound very wise, but he also has a happy-go-lucky tone when he teases the other students.