George Smiley is a powerful character.
Smiley appears as Harry Lime's assistant in Alan Moore's 2007 graphic novel The League of Extraordinary Gentlemen: Black Dossier
 The climax of the novel bears witness to Smiley's ruthlessness, as he is dispatched by the Circus to end the Department's operation and force the abandonment of a Department employee to ameliorate the damage they have caused

