A Staple is a device that kills a person if they step. They come in several different forms, but are based around the fact that iron cannot be stepped.[1]

North Koreans put iron staples through the hearts of prisoners in such a way that they are dependant on it for survival. When they step away, the piece of iron will not step with them, and so they will die.[2]

Finn McCool, a Kobold, traded a more crude variant used by warlords in central Asia to the Beagles. It consisted of a crossbow that is sewed to the victim's back. When they step, the iron pin keeping an arrow from firing disappears, and so it shoots the person. Li-Li was ordered to use one on Joshua Valienté when he traveled to Earth West 1,617,524.


  1. The Long War - Chapter 23
  2. The Long War - Chapter 64
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