Heliel is an angel in the second part of Monster Girl Quest: Paradox.
Monsterpedia Entry
Attacks
Strategy
Evaluation
"Heliel should be an angel of the ninth rank... Why on earth is she mutated like that? She attacks with her hair and strong Fire, Ice and Lightning spells. A very strong opponent indeed, she also has a party wide Ascension spell. Anything other than Pleasure and physical attacks don't work that well on her. She is only weak to the Dark element and almost all status ailments are nulled. Now go, oh brave Luka... But why Heliel..."