When it comes to GMing I have to admit that quite often I cheat with NPCs and enemies. Not with their dice rolls but with their stats. Most of the NPCs and monsters in my games consist of only a fraction of the detail that would be found in a complete write up.
A lot of the time I lean towards the bare minimum, noting attributes and skills on the fly as required. I’ll often have an idea of their competencies in my head but until they come into play they’re just that, ideas. Doing so requires a level of system mastery that I don’t currently have with Legend of the Five Rings, especially given it’s a system where antagonists can easily out-rank the PCs. To help with that I’ve put together a generic NPC cheat sheet, which covers all of the essential components other than the school specific abilities. It’s geared primarily towards bushi and courtiers. For shugenja rings will be slightly higher, skills slightly lower. It’s already proven useful in my current Fallen Mountains campaign, hopefully it’ll be of use to other GMs out there.