- Ninjas are mammals.
- Ninjas fight ALL the time.
- The purpose of the ninja is to flip out and kill people.
- The ninjas are deadly and silent. They're also incredibly violent.
- Sometimes ninjas just want to be noticed ["http://www.amazon.com/Wink-Ninja-Who-Wanted-Noticed/dp/0670010928"]
- According to Essays of Masaaki Hatsumi, the animus of a ninja is death.