Libra

Libra is a Celestial Spirit that is one of the 12 Golden Zodiac Keys. Her key is currently owned by Yukino Aguria.

Appearance
Libra is a slim, well-endowed woman with dark hair tied into two buns, and long fringes that fall into her eyes and the sides of her face. Her attire consists of a frilled and striped bikini top along with two long strips of cloth that hang from her waist and cover the front and back of her lower body. Libra's wrists, forearms, thighs and ankles are all covered in bands, ranging from thick, long bracelets to thin straps. Her neck is also concealed by a thick necklace, which starts at her collarbone and runs up to just below her chin. On her feet are a simple pair of sandals, and her head is dressed with a zig-zagged headband. Concealing Libra's lower face is another cloth, which is tied around her head, hiding the lower part of her nose and mouth from view.

Dangling from her hands, Libra carries a pair of scales, with thin cords running from her finger-tips to the sides of the scales, so that she holds them in an almost puppeteer-like fashion.

Personality
Libra seems to be quite used to battling with her owner Yukino, jumping straight into battle and instantly obeying Yukino's quick instructions when directed. She also seems quite willing to fight for Yukino Aguria, not arguing when given instructions, but rather, giving a short confirmation of her orders and attacking.

X791 arc
Libra is summoned alongside Pisces and Ophiuchus by her owner Yukino Aguria to fight Yukino's battle opponent, Kagura, during the second days final battle of the X791 Grand Magic Games. Yukino asks Libra to increase Kagura's weight, and Libra immediately obeys.

Magic and Abilities
Gravity Transformation: Libra, like Risley, is able to use Gravity Transformation which makes the opponent heavier which makes the opponent an easy target.

Immortality: As a Celestial Spirit, Libra cannot die, unless she is forced to stay in the Human World somehow.