- In the Silver Age and Bronze Age, the Spectre was forbidden to actually kill anyone. The Bronze Age series got around this by having him do things like turn criminals into inanimate objects and destroy them in various ways. Since the Comics Code Authority let him get away with it, they must not have realized exactly what they had done.
- It has been implied repeatedly that with the wrong human host, the Spectre will completely take over.
Fridge / The Spectre