Originally Posted by Fouredged Sword
If you want to have a supernatural creature in a nWoD game, feel free just to make something up. Give it a few strange powers and let it ride. It keeps your players on their toes. Had my players fight a chupacabra once. Great fun was had when it caught them unprepared in the woods during daylight because they thought they where hunting a vampire.
This is good. I'd personally start with a ghost-related plot to emphasize the investigative/stealth/horror aspect of the game to your group - rules for ghosts are included in the main book - but the book also has an Antagonists section with various enemies to use, and the very modular system (no levels or classes, just stats and XP) means you can squash together an enemy stat block very easily.