Scooby-Doo! And Krypto, Too! (DVD) The Mystery Inc. Kids picked the wrong day to visit Metropolis, as a scourge of supervillains including the Joker, Harley Quinn, Solomon Grundy, and many more have turned the place into their personal playground, and the Justice League's nowhere to be found! Can Scoob and the kids-even with the help of Superman's powerful pooch Krypto-bring the heels to heel? Matthew Lillard, Kate Micucci, Grey Griffin, Frank Welker provide voices. 76 min. Widescreen; Soundtrack: English.