Ninja never bring a gun to a sword fight. Ninja don’t use guns. Ever.
The only way to end a ninja clan is to break the head ninja’s sword.
Ninja never show their real face. If the need to show a face arises, it should be a very shiny mask. This is the only possible substitute.
When attacking a single ninja with a clan of ninja (more than 4, less than that is only a posse), it is proper ninja etiquette to fight with only one ninja at a time. This makes for a much nicer fight to the death. NOTE: if you are planning to fight the mack daddy ninja, be sure to bring lots of lesser ninja to warm him up for your grand entrance.
When fighting with bow and arrows, a proper ninja will always destroy his bow if one of his arrows is caught in mid-air, and then broken over one knee of another ninja.
Ninja stars and sake are a perfectly good currency for ninja payments.
Ninja always use 4 pointed ninja stars. The fancy stars with more than for points are for the lesser ninja.
Ninja can only use their special disappearing powers in combination with a smoke bomb. This is not negotiable.
When training with other ninja, it is proper to group off into different colors. Stay with your color at all times! Failure to keep with your color results in a circle kicking, where you are in the center of the circle.
Ninja always wear tabi boots. Even when they sleep.
When confronting other ninja, always try to wear a different color than that of the ninja you are attacking. It is proper ninja-etiquette to give “home” color to the defending ninja.
Ninja don’t sleep. I know I said they do above, but I lied.
It’s expected that ninja will lie from time to time.
When encountering large falls and leaps it is appropriate to always give the right-of-way to the first ninja to jump.
With that said it is equally appropriate to give the needed time and space for the following ninja to jump and catch up.
Ninja never wear headbands with the word ‘ninja’ printed on them. This would be a dead give away when trying to blend in. NOTE: Sometimes as a joke the elder ninja make the geek of the clan wear such a headband. Sort of like a “dunce” cap.