Medabots

The series centers around Medabots, artificially intelligent robots, whose purpose is to serve humans. Later in the series, Medabots are found to be actually thousands of years old; remnants of an ancient civilization who called themselves Medalorians. The Medalorians were obsessed with war, and to become more effective warriors they fastened metal armor to themselves. However, their wars decimated the civilization, and the survivors coded their memories onto hexagonial pieces of metal. These, "Medals", cloned and mass produced by the Medabot Corporation (a corporation founded by Dr. Aki), are the Medabot equivalent of a brain and soul. The original medals, referred to as "rare" medals, are kept in storage because of the extreme power they have.