Eru Ilúvatar is the supreme being in J.R.R. Tolkien's Middle-earth legendarium. He is introduced in The Silmarillion as the creator of all existence. In Tolkien's invented Elvish language Quenya, Eru means "The One", or "He that is Alone" and Ilúvatar signifies "Father of All".
cosplay by me
photo by KuroCat-sama