Mattel: The Dark Knight Wave 2 Found Posted by D_Martin on July 8, 2008 at 01:24 AM CST: The second wave of Mattel's Batman: The Dark Knight action figure collection has just been found at retail. Click the thumbnail above to check out a shot of two figures purchased at a Wal-Mart in Baton Rouge, LA. Hats off to Cool Toy Review reader Stephen for the picture and tip.