1925's 'The Lost World' is... really, everything a dinosaur movie should be. Like a dinosaur, this classic was once extinct too, existing as mere fragmentary footage and stills, but cinemaphile fossil-hunters have painstakingly excavated bits and pieces from obscure archives and assembled them into a nearly-complete animal.
According to Jewish legend, only the very wisest and very holiest rabbis had the power to make golems, animated servants of clay. Strictly speaking, the golem is not in the same class with Frankenstein's monster, because the golem is neither alive nor dead. He is, rather, the ancestor of all robots.
Back when the concept of organ transplants qualified as science fiction, novelist Maurice Renard wrote a thriller called 'Les Mains d'Orlac.' Call it a bastard offspring of 'Frankenstein;' its plot revolved around the old theme of Science Giving Us Stuff We Shouldn't Have - in this particular case, restoring severed body parts.
Let's say you need a perfectly obedient servant who never gets tired, never needs to be paid, and is virtually indestructible. If you're in a galaxy a long time ago and far, far away, you'll just fly off to the local droid auction and pick up one of those shiny gold models with lovely manners.