Antagonist
Gordon R. Dickson
Childe Cycle (12)
Homeworld
Harry Harrison
To the Stars (1)
Treasured
Poppy Woods
One Good Knight (Tales of the Five Hundred Kingdoms)
Mercedes Lackey
500 Kingdoms (1)
The Goblin King
Heather Killough-Walden
The Kings (4)
The Warlock King
The Kings (3)
The Phantom King
The Kings (2)
The Vampire King
The Kings (1)