Dougal and the Blue Cat

A blue feline named Buxton is found in the Magic Garden. With help from the Blue Voice (voiced by Fenella Fielding), Buxton ventures into the ruins of the old treacle factory, where he is crowned king after correctly identifying the colours of seven doors, each a different shade of blue. Buxton then imprisons all the characters of The Magic Roundabout except Dougal and steals Zebedee's magic moustache.