The 2.5 inch tall Riddler Pewter Keychain is a highly amused metal keychain hosting DC Comics Captain of Conundrums, the Riddler! I think the Riddler Pewter Keychain is the best way to keep all of those keys to your Riddler Trophy rooms...that makes sense, right? Durable and fancy, the Riddler Pewter Keychain is the ultimate in Riddler-based keychains.