Hagal is the number 2 demon in Niflheim. She can manipulate perceived reality, making illusionary attacks seem real. Hagal, is a powerful demon, who takes the control of Niflheim—The Hell—in a rebellion against Hild. She is the second in the power in Hell and jails Hild because she thinks Hild has lost the power and glory of the demon world. She has an elaborated plan to get more share of wishes on Earth. Chibi-Hild is attacked by Hagall's servants on earth and she goes with Belldandy to get help and fight against her. Hagall has an elaborated plan to destroy everything related to the Goddesses (the history is developing actually in the manga—chapters 240 till 252). Hagall usually talks about herself in third person and she has a lot of servants who fight with her. Her powers includes mental control and hypnotism, and she uses against her enemies. She is a very selfish and ambitious, in fact she does not consider the energetic health of Heaven and Hell (brought by humans' contracts) during the shifting of the equilibrium when her demons grant too many wishes.
Hanako was the dog of the author.
A purebred female Kishu, the girlfriend of Mametarou. Her love of Melonpan, a Japanese pastry, often gets the better of her. She has a caring, though naïve personality. (Source: wikifur)
A mysterious, energetic young girl residing in Daisuke's bathroom. She appears to be quite skilled with technology, and is very fond of both Asou and Kanae. Hanako is an allegory possessing Asou. Later on, it is reveled that Hanako had once been roommates with Asou when he was a child in the hospital.
Yuzuki's LRIG. Hanayo seems to have a calm and a composed personality. She supports Yuzuki in times of need, this is seen when she told Yuzuki that there was nothing wrong with her wish. Hanayo seemed to have some knowledge about Tama which is not yet revealed up to this point. When Yuzuki becomes an Eternal Girl, Hanayo takes her identity and fulfills her wish. In Selector Destructed WIXOSS we discover that her real name is Unjou Hanayo.
The mad king, who craves for Lala Ru in a kind of naive love, trying to care for her—when rejected by Lala Ru, he goes into raving fits, screaming at her, destroying things in the vicinity, but never hurting Lala Ru (though he does pull her hair). She has special powers involving water which on the desert planet is something he craves for, to make him achieve his ultimate victory. (Source: Wikipedia)