Cadena was a part of Heliseum's royal family until Magnus and his forces invaded her home and killed her family. Scared, she tried to hide from the Specters and was almost confronted, until a Shadow Merchant saved her. Seeking revenge, she abandoned her own name and adopted "Cadena" as the new name and started training with the Shadow Merchants.
Cadena is Spanish for chain, which suits her as Chain is her main weapon.
Despite appearing to look the part, Cadena is not actually a human, as her Nova horns, wings, and tail were removed. This makes her the eighth class that is not human, suceeding Mercedes, Demon, Kaiser, Angelic Buster, Xenon, Beast Tamer, and Zero, followed by Illium and Ark.