Ravel Phenex

Ravel Phoenix is the younger sister of Riser Phoenix and the youngest sibling of the Phoenix Clan who was once a member of her brother's peerage. Like her older brother, she has inherited the powers of the Phoenix, and possesses the power of immortality.

Personality
Ravel obeys her brother's authority, which shows that she is very loyal to him. She strongly believes that her brother is so powerful, no one could ever possibly defeat him. However, after witnessing his crushing defeat at the hands of Issei, she becomes attracted to him, and later falls in love with him as the series progresses. She doesn't really mind of being one of his "slaves", or otherwise his "concubines", just as long as she can continue to be by his side. She is what would be known as a "free bishop", due to the fact that she has traded herself back to her own mother's team (who does not participate in Rating Games). It is highly possible that she will trade herself to become one of Issei's Bishops when he gains peerage, for she only wishes to be of use to him.

Plot
Ravel first appears in Volume 2 as part of her brother's peerage and became intersted with Issei after her brother's defeat at his hands. She reappears in Volume 5, during the party for Young Devils. In Volume 10, she transfers to his academy and moves into the Hyodo residence with Issei, just so that she could spend more time with him.

Powers & Abilities
Ravel has yet to reveal her abilities. However, it is highly likely she shares her brother's abilities of fire and immortality. Also, given the fact that she's a Bishop, it can be assumed she has impressive magical power.