Sanzu River
Deker is a mysterious Shōjō-themed Nighlok swordsman who doesn't remember his past and is cursed into finding the ideal opponent to duel. He is armed with the katana Uramasa and called by Xandred as the Cursed Warrior due to being half-human. Deker was once married to Dayu before becoming half-human. As a human, he was a samurai and was given the blade Uramasa by Dayu. But when a house fire almost kills him, Dayu surrendered her humanity to Serrator to revive him. However this erased his memory and turned him half-human half-Nighlok cursed to forever wander with a thirst for battle. Due to being a half-human, Deker has the ability to assume human form and transverse between the Netherworld and the land of the living without relying on the Sanzu River for survival. He considers the Red Ranger to be his greatest challenge since Uramasa's blade became radiant.