There are a wide variety of Creatures and NPC's in both games. However, Skyrim gets the cake with their Dragon, and Oblivion with Mehrunes Dagon. The NPC's/ Enemies are of the following (For both games): Imperials, Bandits, Horses, Dragons, Shopkeeps, Followers, Dogs, Falmer, Thalmor, Dwarven Machines, Deadra, Imps, Giants, Frostbite spiders, Spiders, Jarls, Blades, Greybeards, Mamoths, Sabretooths, Orcs, Thieves, Assasins, Cultists, Wizards, Mages, Deareaic Princes, and The Player. There's not really much to talk about here. Sorry to dissapoint.