Men are a rarity on this island, and you look like a prime specimen. We'll have to keep you locked up so we can keep you safe from the others... and so we can use you as we please (sleepygimp)
The absolute had won, and with that victory those that opposed it were repurposed. It had many mortal slaves and it found the best way of maximising efficiency was letting them take out their urges on other mortals. Thats where the would be heros came in