Madame Synn prides herself on her ability to apply even the most bizarre technologies in the development of armaments and weaponry. Her clients have included special agencies of the United States government, as well as criminal organizations DEMON and Viper.
Because she often engages in activities that might be construed as being “criminal”, she keeps her true identity a secret. Not even Icestar has realized that his girlfriend is in reality the evil Madame Synn.