Syndic

“My papa is a Syndic—he is M. Frankenstein—he will punish you.” (Shelley 86).

A syndic, in much of Europe, means a government official, perhaps a judge. (http://www.thefreedictionary.com/syndic) William saying that his father is a Syndic gives the Frankenstein family prestige, wealth, and trustworthiness, since the father is a justice of the peace. On the other hand, the monster, living his life in despair, poverty, and causing destruction, has none of these.