Krull — Alan Dean Foster

It descends from space... THE BLACK FORTRESS
raining death and destruction upon the planet KRULL

Who will rise to defend the people? who will defy the red-eyed Beast who dwells within the Fortress?

One man dares.

Colwyn, who is armed with the magical Glaive. Colwyn, abetted by a band of newly freed felons; a Cyclops with a sorrowful secret; the magician Ergo, small in size but great in heart; an aged Seer; and a brave young boy.

Colwyn, whose betrothed is the captive of the Beast and fighting desperately to resist his loathsome embrace...