Question: Vala is a character that is mentioned in the world created by what English author?
Context: Har is a character in the mythological writings of William Blake, who roughly corresponds to an aged Adam.  His wife, Heva, corresponds to Eve.  Har appears in "Tiriel" (1789) and "The Song of Los" (1795) and is briefly mentioned in "The Book of Thel" (1790) and "Vala, or The Four Zoas" (1796-1803). Xanth ( ) is a fantasy world created by author Piers Anthony for his "Xanth" series of novels, also known as "The Magic of Xanth".  Anthony originally intended for Xanth to be a trilogy, and after the success of the first three books expanded the series to nine books.  A devoted fan base persuaded the author to continue writing the series, which is now open-ended. The World of Watches (Russian: Вселенная «Дозоров» , "Vselennaya "Dozorov"") is a media franchise consisting of six novels, several short stories, two films and two video games based on a fictional world created by Russian author Sergei Lukyanenko.  Another Russian writer Vladimir Vasilyev is co-author of Day Watch and author of Face of Black Palmyra. Epic Mickey is a platform video game designed by Warren Spector and developed by Junction Point Studios for the Wii console.  The game focuses on Mickey Mouse, who accidentally damages a world created by Yen Sid for forgotten characters and concepts, and is forced to fix the world while combating antagonists with a magic paintbrush.  "Epic Mickey" notably features the first appearance of Oswald the Lucky Rabbit since 1943 as a major character, who was one of Walt Disney's first successful cartoon characters before the character was licensed under the ownership of Universal Studios.  The character was regained by The Walt Disney Company in 2006 under the guidance of Bob Iger.  The game also marks the first time that Oswald and Mickey ever appeared together.  The game is much darker and more complex than previous Mickey Mouse games. Vala Mal Doran is a fictional character in the American military science fiction television series "Stargate SG-1", a science fiction show about a military team exploring the galaxy via a network of alien transportation devices.  Played by former "Farscape" actress Claudia Black, Vala was created by Damian Kindler and Robert C. Cooper as a guest character for the season 8 episode "Prometheus Unbound" (2004).  Because of the on-screen chemistry between Black's Vala and Michael Shanks' character Daniel Jackson, and the character's popularity with the producers and the audience, Claudia Black became a recurring guest star in season 9 (2005–2006) and joined the main cast in season 10 (2006–2007). The Mistborn Adventure Game is a pen and paper role playing game that was published in 2011 by Crafty Games and is a licensed release based on American author Brandon Sanderson's "Mistborn" novel series.  Sanderson was involved in the game's creation and the game is set in Scadrial; the World created by the "Mistborn" series.  The initial "Mistborn Adventure Game" book was released on December 16, 2011.  Since 2011, two supplementary material books have been published.  The first supplement was released March 2014 and is called "Terris: Wrought of Copper".  The second supplement was released on August 3, 2014 and is called "Alloy of Law", not to be confused with the fourth "Mistborn" book called "". The Lord of the Rings is an epic high fantasy novel written by English author and scholar J. R. R. Tolkien.  The story began as a sequel to Tolkien's 1937 fantasy novel "The Hobbit", but eventually developed into a much larger work.  Written in stages between 1937 and 1949, "The Lord of the Rings" is one of the best-selling novels ever written, with over 150 million copies sold. Narnian creatures are any non-human inhabitants of Narnia, the fantasy world created by C. S. Lewis as a setting for his "The Chronicles of Narnia".  This is a series of commentaries on the creatures of Narnia.  Entries include information on physical, habitual, and behavioural elements of the creatures, as well as noting any important members of the species.  Each commentary draws on specific references and citations from the books and officially sanctioned Disney films.  Many animals that are found in our world are also present in Narnia, and some species include talking variations.  At the birth of Narnia, Aslan the lion stares at certain animals and breathes upon them.  This enabled them to think and talk in a manner similar to humans, and also altered their size (MN).  Smaller talking beasts – such as rodents, birds and small mammals – are generally larger than their non-talking counterparts, whereas larger talking beasts are generally smaller than average .  There is never any mention of talking fish or insects, although there are Naiads, or water-spirits.  Lewis freely drew on various sources for inspiration; the creatures contained in this list include many from classical mythology and English folklore. In a World Created by a Drunken God is a play by Canadian author Drew Hayden Taylor.  It was first published by Talonbooks in 2006.  The play was nominated for the Governor General's Award for English-language drama. The Valar (singular Vala) are characters in J. R. R. Tolkien's legendarium.  They are "gods" or "angelic beings" subordinate to the one God (Eru Ilúvatar); they are the most powerful of the Ainur who chose to go into the World (Arda) and complete its material development after its form was determined by the Music of the Ainur (Ainulindalë).  For this reason they are also referred to as "the Powers of the World."  They are mentioned in "The Lord of the Rings", but were developed earlier in material published posthumously in "The Silmarillion" and "The History of Middle-earth".
Answer: J. R. R. Tolkien