Kaas Siver, Born Kaas'aquel Xyvern Kristan in the royal hospital of Bakura in the city of Salis D'aar as the daughter of Ashlyn Kristan and Bobika Ha'rangir alongside her twin brother Archelaos Kristan, Produced through genetic engineering of the late Ha'aragol Vaal, otherwise known as Lord Precursor at the time, considered a failed attempt by the Sith Lord, as Heirs. However, The mother and father to protect their children split them apart and hid them away, Kaas left with her godmother, The Queen of Bakura, Talia Kristan-Seda.