Frankenstein in Love by Clive Barker, "It is the last, long night of the world..."

A political revolution in a fictional South American country has turned the world upside down and opened the door to a secret laboratory, allowing chaos and monsters to escape. El Coco, the leader of this rebellion, is himself a created monster, with a never-ending desire to be human, overcoming his murderous instincts and unnatural appetites. Nothing, he soon discovers, is more human than finding love. But standing in his way is Dr. Joseph Frankenstein, the man who gave him life and who now threatens to take it away. Ravenous creatures, sardonic ghosts, and desperate revolutionaries surround the question: Who is stronger, the Man or the Monster?