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 invaded Itogami Island and attacked MAR while disguised as Avrora. After battling Kojou, she managed to regain her lost memories using the No.14 Grimoire.
According to Kojou, she's the type of person who likes to play around with her prey.
She was first seen in volume 7 disguised as Avrora using the No.14 Grimoire in attempt to recover Kojou's lost memories she is the weakest primogenitor she was beaten in a war by United States of America who she was missing in there political affairs and. Influence as result all Americans is United States territory in one form of another . In volume 10, she sent the 6th and 10th Kaleid Blood to Itogami Island as a reward for Kojou for defeating the evil god. They are currently in Oceanus Grave II under the custody of Dimitrie.
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.