The Mad Goblin
They were known simply as the Nine – grim and ancient rulers who thirty thousand years ago had discovered the key to eternal life and ever since had secretly held the world in thrall.
Once, Doc Caliban had been their servant and had shared their secrets. Now, appalled by their tyranny, he had turned against them, daring to challenge their centuries-old supremacy.
Together with two henchmen whose superhuman skills match his own, Caliban sets out on the trail of the deadliest of The Nine: the mad goblin Iwaldi, the very incarnation of Evil...
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Philip José Farmer
Philip José Farmer (1918–2009) was an American author, principally known for his science fiction and fantasy novels and short stories. He spent much of his life in Peoria, Illinois.
Farmer is best known for his Riverworld series and the earlier World of Tiers series. He is noted for his fascination for and reworking of the lore of legendary pulp heroes, and occasional tongue-in-cheek pseudonyminous works written as if by fictional characters.
Doc Caliban and Lord Grandrith
Doc Caliban and Lord Grandrith consists of 3 total books. The current recommended reading order for the series is provided below.

