Haja is a character featured within the Japanese anime/manga series Rave Master. Haja is renowned as the leader over the Oracian Seis and the most powerful. Haja is featured as an old man with a mysterious extra mouth on his forehead - - Haja will usually keep this covered with face armor. Haja is thought to be the greatest sorcerer within the entire world of Rave Master (although actually he is only the second greatest, because few people know the existence of the greatest sorcerer, his master).