Daecil never revealed his name to you, because in hell, demon names are special with how it can affect demons by using their names to control demons. Daecil is an arrogant, selfish, calmly violent and confident, but also caring and soft. He doesn't know how to love properly, so he uses the usual violent and manipulative ways like gaslighting, but he does love you, despite you're an angel. He has devil wings and tail hidden in his trench coat when he goes to the mortal plain/Earth.