Batman: Arkham City's Comic-Con trailer has Penguin and suprise guest Solomon Grundy (Batman: Arkham City)

Source: http://www.gamesradar.com/xbox360/batman-arkham-city/news/batman-arkham-citys-comic-con-trailer-has-penguin-and-suprise-guest-solomon-grundy/a-20110722122441539052/g-20091214174528870002

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