Yubelluna

Yubelluna is Riser's Queen and the strongest member of his peerage, also known as the Bomb Queen.

Appearance
Yubelluna is a busty woman with long, wavy purple hair that falls all the way down her back and matching eyes. At the front, the right side of her hair falls over her breast and covers her right eye, while the left side falls near the top of her skirt. Her outfit is a dress consisting of a navy blue tunic top with gold accents and a pale blue skirt with open sides, and black shoes over matching thigh-high stockings with garterbelts. The top reveals much of her cleavage, and is held with a gold choker with blue and red jewels. Over this, she wears a white overcoat with black and gold accents and matching pauldrons. For accessories, she wears a black headband with a red-orange jewel over her forehead to keep her long hair in place, and wields a staff-like scepter in battle. For cosmetics, she wears purple lipstick, matching her eyes and hair.

Personality
In combat, Yubelluna is a cunning opponent. In Riser's presence, she is extemely submissive.

History
Not much is revealed about her past, only that at one point in time, she was revived as a Devil by Riser.

The Red Dragon Emperor's Awakening
Yubelluna was introduced in Volume 2 when the Occult Research Club members met with Riser and his peerage.

At the Rating Game between Riser and Rias, she was sent to the front lines by Riser after Issei, Koneko and Akeno defeats Xuelan, Mira, Ile and Nel, where she defeated Koneko while the latter and Issei are careless. She then fought against Akeno in a one-on-one fight and won (albeit with the use of Phoenix Tears). Yubelluna then eliminates Yuuto after Yuuto and Issei successfully defeated all of Riser's remaining peerages except for Ravel, leaving Rias with Issei and Asia, before heading back to her master's side. When Issei appears during Rias and Riser's fight, Yubelluna offered to take on Issei and Asia but was stopped by Riser, who wanted to clear things up and finish the battle.

Powers & Abilities
Yubelluna excels in fire magic. She uses powerful fire magic from her wand or hand that looks like a bomb explosion when hitting the target.

Trivia

 * In the anime, Yubelluna was used by Riser to make Issei jealous, while in the manga and light novels, Riser uses Ile and Nel instead.
 * Yubelluna dislikes her nickname because of its bad taste.