Cupido is the true final story boss of the Sega Saturn version of Battle Arena Toshinden. She is a best member of the Secret Society who joined the first Toshindaibukai tournament for an unknown reason. Cupido has much knowledge of the pasts of the heroes and upon defeat, gives critical advice. During her time, she had a relationship with Sho Shinjo and eventually became a mother to Subaru. By the time the Secret Society falls, we don't know whether she is dead or alive, the only evidence was shown when Subaru was left in Eiji's care.