A being of Nightmares that was created during the "age of gods". He live in the shadows of mankind to punish the wicked and send nightmares that drove them insane, broken, and eventually to their death. Some say his nightmares are too horrible that death is a mercy. He's deeds made him a legend to be feared and admired throughout time and was enough to be recorded in the "Thrones of Heroes". After the Fourth Holy Grail War was over, he was summoned by a emotionless little girl that suffered greatly in her life. He vowed to protect her no matter what.