Batman

Scarecrow Klein, a criminal genius with an exceptionally high IQ, was a pawn the League of Shadows had planted to destroy Gotham City. More than a year ago, the League of Shadows, which had long operated in the underworld, bared its fangs again after many years. They turned their attention to Gotham, a city steeped in crime. Just as they had destroyed London, they intended to destroy this metropolis of tens of millions. Scarecrow Klein was the League of Shadows' vanguard.