We have all been there, when your role-playing on the fly and your Players start chatting to the locals and you didn’t plan on it. The problem comes when that throw away NPC you just made up becomes a recurring character your players insist on chatting to. But oh no you forgot what that NPCs name was or where they lived. No need to worry anymore with this handy simple log sheet for NPC. No longer will you forget.
Alternatively, why not fill in this sheet before you start a session with a couple of randomly generated NPC so your even more prepared. Wow, now your really prepared for the unknown! Printable PDF here