Atlus Co., Ltd. (株式会社アトラス Kabushiki-gaisha Atorasu) is a Japanese video game developer, publisher and distribution company based in Tokyo, and a subsidiary of Sega. It is best known for developing the Megami Tensei, Persona, Etrian Odyssey, and Trauma Center series. Its corporate mascot is the Shin Megami Tensei demon, Jack Frost. More: en.wikipedia.org.