Cold Blood was forged by a group Japanese ronin who where often hired as assassins. It was always considered a weapon of mass destruction in ancient Japan. After several hundred years, the blade was shipped to Singapore, then thrown into the ocean, hoping never to be seen again. For some reason, it never rusted, no matter how much sea bilge and barnacles attached to it. Sometime in the late 1600s, it washed up on a less-visited beach in Singapore. There, Ebon Slicin recovered it, and added it to his hoard.