Athenodora

Athenodora is the wife of Caius and a member of the Volturi family. She lives in Volterra, Italy and rarely leaves the tower, even during important times of vampire history, such as the hunting of the immortal children. She only appears at the end of the Breaking Dawn, but plays no role in the action. In the book, it is mentioned that during the confrontation between the Volturi and the Cullens, that there appeared to be "two hooded figures, definitely women, flanked by two hulking bodyguards." These women were Sulpicia and Athenodora, and are often mentioned together. They are important to the ancients, and therefore have to be protected.

It's unknown when, where or how she met Caius, but in Breaking Dawn, the Romanians mention that she and Sulpicia joined Aro and Caius before their rise of power around 500 A.D.

Physical description
Athenodora is described as a drifting waifish figure with no special powers. She is fair-haired, and has the powdery skin and filmed eyes of all Volturi leaders.

Caius
Caius is Athenodora's mate. Little is known about their relationship except that the Romanians' recognition of her suggests they were together before the Volturi came to power. She remains in the tower, and the few times she does leave he has her heavily guarded, suggesting a dependence on her.

Sulpicia
Sulpicia is Aro's wife; it is believed that she and Athenodora spend the majority of their time together.

Appearances

 * Breaking Dawn