Not only that, but the Creature was rather intelligent and civilized to an extent, it's actions the result of the abandonment by its creator that it suffered at a critical moment. An abandonment cause by horror at a physical appearance, which in turn caused the Creature to be horrible in actions as well as appearance.

I'm not sure I've ever seen it adequately used as a metaphor that rose above the "Oooh, it's a monster!" level.