Cai (k-ai) is the adopted son of Alun Swordstorm. He suffers from long-term amnesia. His oldest memory is that of being rescued by Swordstorm from a shipwreck on the Taleni coast clutching a superbly crafted longsword. The only other clue to his past is a mysterious tattoo inked onto his back. He fears the tattoo is linked to the Mendari religion, so hides it from everyone apart from Alun. Cai’s ambition is to become a Named warrior like his father.