The Curse of Clawfingers and The Double from Dimension 9

Dinkin's made a big mistake. He's invented a machine of such mindboggling anti-everythingness that it's too terrifying to use. But before he can get rid of it, the machine is stolen by a creature from the loft Clawfingers. Then just when Dinkin thinks life might not be so scary after all, things take a terrifying turn for the worse: his reflection comes to life. He finds himself face-to-face with his bespectled-and fearless-double, Danger Dings from Dimension 9!