Giada Kukulcan (ジャーダ・ククルカン Jāda Kukurukan) is the third Primogenitor who formerly rules the Chaos Zone in Central America. She doesn't like being referred to as the "Third Primogenitor: The Chaos Bride" and prefers to be addressed as Giada.
Lustrous, emerald green hair and eye's like the jade of a deep lake. Outwardly youthful with a powerful but lovely beauty reminiscent of a wild leopard.
According to Kojou, she's the type of person who likes to play around with her prey.
Giada debuts in volume 7, where she uses her ability to transform (shape-shift) to invade Itogami Island disguised as Avrora. The main purpose of her visit is to reawaken Kojou's lost memories of Avrora, however, she also seeks to punish MAR for their treatment of Avrora's corpse; ultimately she's prevented from doing so by Kojou.
She is the weakest of the 4 Primogenitors and is defeated in war by the United States of America for interfering in their political affairs trying to gain influence. Subsequently, the United States expands their territory in one form of another. As a reward for defeating the Dark (Evil) God in volume 10, Giada sends the 6th and 10th Kaleid Blood to Itogami Island where they are currently under the custody of Dimitrie in Oceanus Grave II.
More to follow. (Once Yen Press release more Light Novels)
Enhanced Vampiric Abilities: As a vampire, she possesses supernatural strength, speed, reflexes and durability. In addition, due to being the Third Primogenitor, she has incredible power far above that of most vampires and is virtually immortal.
Familiar Summoning: Giada has 27 familiars, most likely they are intelligent-type weapons.