She is the older sister of the 2 twins and is very loyal to Kurai. She was once under Mad Hatter's control when she marked Noise the sign of the Demon Lord. One of the demons (a bird/monster/big head thing) was in her body and was killing their people for a while. After Voice's death, She vows revenge on the killer (Arakune) and went to Sheol with Setsuna with the suspicion of Arakune being the killer. She gets her revenge at last when Arakune offers herself to be the 999th bride.
She represents Wrath of the Seven Satans. She was in love with Lucifer in heaven. In the rebellion against god, Barbelo threw herself in the path of Michael's flame in order to protect Lucifer from being stroke at. Before Lucifer fell, he took Barbelo with him to hell and from there she became one of the Seven Satans. She still loves Lucifer very much and later on dies trying to stop Setsuna from entering Atziluth.
He represents Lust of the Seven Satans and is deeply in love with the butterfly, Belail. Asmodeus has 3 heads, 1 of human and 2 animals'. He's in his mid-40's and likes to sleep with women just as much as Raphael does. Asmodeus is the one who agreed to sneak Alexiel/Setsuna in to the wedding ceremony of Lucifer's 999th bride, the reason he gave for this was to piss off Belial -.-
She/he represents Sloth of the Seven Satans. She/he is a failure of god, for god was trying to create another being like Adam Kadamon. This body occupy 2 souls, 1 of Astarte the sister, the other as the brother Astaroth. Lucifer helped them become separated by when Astarte is in use of the body, Astaroth becomes the black snake on her neck. And when Astaroth is in the body, Astarte is the white snake. The brother despises Astarte and keeps on killing her babies that she swallows to fill up her stomach. She tries to turn Kurai into one of her babies but is killed by Prince Abaddon (the son of Lucifer with another bride). Astarte used her last remaining strength chanting a spell that can turn herself into the snake and leaving her brother the body so he can live on normally.
He was once an angel in heaven who was and still is in love with Laila. But due to Laila's insanity, she accused him as a part of raping and branded him a Fallen Angel. Uriel finds him and makes him the dragon-like monster you see now. Nydd Hogg volunteered to bring Setsuna back to Gehenna. Before he is about to die, he gives Setsuna this seed that embodies the voice of Laila. Setsuna is told to find Laila and tell her that Nydd Hogg never blamed her for what she did. Nydd Hogg's spirit later visited Laila when she is about to die.
He is the guardian of Hades. He's this old man with about a dozen faces on one head... he looks more like a statue. Enra-ou guards the souls in Hades and seals them into this jar. He is the one who tricks Katou by giving him this cloak that emits his energy to attract ghouls (which Katou doesn't know at the time or else like hell he will take that cloak). Enra-ou is still the guardian and forever he will be.
