According to this article, Mr. Belvedere is the Antichrist

To begin, Mr. Belvedere is a shadowy, if not shady, figure not unlike the ninja – familiar yet dark, just beyond our reach, enigmatic, enticing, masculine yet not, in theological terms "a coincidence of opposites." With the metaphysicians, epistemologists, and mist-shrouded mystics we ask: “Who is Mr. Belvedere?” Continued.