Azazel  (English, Paperback, Asimov Isaac)

He's two centimetres tall. He's fiery red. He has magical powers strong enough to wreck a normal human's life...all with the best intentions, of course. George Bitternut, an eccentric linguist stumbles onto an ancient incantation that calls forth this diminutive demon of astonishing wizardry. Unfortunately, Azazel refuses to do anything for George's personal gain - but he agrees to help out a few of his friends. This devilish collection of stories follows the antic adventures - and misadventures - of Azazel and our beleaguered Mr Bitternut. Told with great fun and in the inimitable Asimov style, Azazel makes for hours of pure impish delight.