Rebel of Antares. Dray Prescot, #24

Lone Earthman on the vivid and intricate world of twin-sunned Antares in Scorpio, Dray Prescot has been the pawn of the unseen Star Lords who seeded that planet with the offspring of a hundred alien races. But at last Prescot has come in sight of the goal to overthrow the slavers and their evil empires that he shares with these space masters. On the island kingdom of Hyrklana his course now seems clear: overthrow its decadent queen, lead rebellion against the cruel Arena, and free the princess who was its rightful ruler.
It is a hard task, but for Dray Prescot against whom sorcerers and swordsmen have contended, it is the only course he could follow. Though it might this time lead to his death, there can be no turning back. The adventures of Dray Prescot stand equal to the works of John Norman, Robert E. Howard and Edgar Rice Burroughs for sheer fast-paced high adventure. Rebel of Antares is the twenty-fourth book in the epic fifty-two book saga of Dray Prescot of Earth and of Kregen by Kenneth Bulmer, writing as Alan Burt Akers.
The series continues with Legions of Antares