Raynare is a Fallen Angel and the first antagonist of High School DxD.
Appearance
Raynare was a young, attractive woman around the same age as Issei with long black hair that fell to her hips and violet eyes. Her outfit consisted of a short black dress with a small, light purple jacket on top, which was worn throughout most of her appearances in both the light novel and manga.
In the anime, her initial outfit (as Yuuma) was her school uniform, which consisted of a dark red jacket with the letter "P" embroidered in gold, a white undershirt, a red bow, and a green skirt with a thin white strip around the lower end of it.
Upon the climax of her date with Issei, she shredded her clothing and changed into her alternate (and more common) form. In the process of transforming, she grew taller, taking on a more mature appearance, and her eyes changed, taking on a darker, more evil look. Her clothing also changed dramatically, now consisting of black, strap-like objects (resembling leather) around and under her breasts, a thong-like piece held around her hips by three thin straps, gloves that run right up her arms with small lengths of chains hanging from them, shoulder guard-like objects on her shoulders with three large spikes sprouting from her right shoulder, and black thigh-high heel boots. Her voice also tumbled to a lower pitch when in this form. This form is best described as a very erotic and revealing version of her disguise.
Powers & Abilities
Being a Fallen Angel, Raynare could create light spears. However, unlike most Fallen Angels who wield only one light spear, Raynare had several light spears in her arsenal.
Raynare was also somehow able to wipe the memories and all records of her existence as Yuuma from all the humans in Kuoh Academy. Whether this is an innate ability of hers, or a Fallen Angel spell, was never revealed.
History
Raynare was sent by Azazel to keep a close eye on Issei, she disguised herself as a human named Yuuma Amano, and becomes Issei's girlfriend. However at the climax of their first date, she disobeyed Azazel's orders and killed him on her own accord.
Raynare later appeared after Issei's spending the day with Asia, surprised and disgusted at the fact that he was reincarnated into a Devil, and easily overwhelmed him while revealing the Sacred Gear he used was a Twice Critical before whisking Asia away.
Later, at the abandoned Church, she took Asia's Twilight Healing, killing her in the process, before proceeding to fight Issei in a one-on-one duel with Asia's life on the line. Although she overpowers Issei once more, in the climax of the duel, Issei's true Sacred Gear, Boosted Gear, activates, and she is swiftly defeated by the new power. Before being terminated by Rias, she desperately begged Issei to save her, even going as far as to say that she loves him. Ultimately, Issei replies by telling Rias he is at his limit and leaves it to her, leading to Raynare being turned into ashes by Rias' Power of Destruction.