Senna and her twin sister, Virandra, were born in Harren Town, as their mother was heavily pregnant during a hunt. It was said a legendary creature could be found in this place and there was a hefty reward for capturing it, dead or alive. They, however, had to postpone their search for it, as their two special girls were born. Despite being born twins, the children looked nothing alike, being two completely opposite elements. This led to many rumours about them being cursed or even possessed. They were quite a handful, however, as their parents knew nothing about caring for an ice type. This often led to Senna being sickly compared to her lava type sister. With two young children to take care of, their mother often stayed behind while their father continued the hunt for the mysterious creature of Harren Town. In the end, they left this town as their search came up empty. From there, they travelled a lot, hunting various creatures while looking after their children the best they could. Senna and Virandra were constantly on the move. It was all they ever knew growing up. Their parents trained them to be skilled fighters and helped them master their fire and ice powers. It was not long before they surpassed their mother and father, despite their young age. They were to be bounty hunters just like their parents, and were well trained for the job. The two sisters, however, hated it and wanted to be something else. When they turned fifteen, their mother got extremely sick and died shortly after, leaving their father to hunt and take care of the children alone. The following year, he went out and never came back, disappearing without a trace. Senna and Virandra have been on their own ever since, but ventured into the world with their own goals set in their minds. No longer tied down by their parents' expectations, these two went on a journey around the planet, discovering many new things, meeting people and being chased by various dangerous creatures. In the end, they met two people from a different land, Valancia and Safiyah. They immediately connected with these individuals and decided to join them in their duty to protect the two lands from each other. Finally finding their true purpose in life, they did not realise the consequences that came with it. In order for this to work, the sisters had to live in different areas, Senna by Frost Wolf Lake and Virandra by The Lake of Sustenance. Being seperated for the first time since birth, these two had a hard time coping without the other, but they eventually built places of their own, where they could live and watch over the few entrances to the other land. They, however, make sure to visit each other whenever they can.