 His descendants are what would become the Kinniku clan.Silverman was the original creator of techniques that would later be refined by the Kinniku clan to become the Muscle Curtain and the Muscle Spark (His version of the Muscle Spark, the Arrogant Spark, is a lethal version of the Muscle Spark).He had left the Perfect Origin to convince his brother to return, but also to create his own faction of "inferior" choujins based on the ideals of justice and mercy.