The Boomknives are a pair of brass-knuckles each containing a short, sharp dagger. They have a built-in pressurized ejector for the blades, allowing them to be ejected out and fired at somebody. The blades are then instantly rebuilt.

Xero used these to neutralize multiple humans and robot drones. He later used these to fight his robot counterpart.


  • Xionic Madness 3
  • Xionic Madness 4

Ad blocker interference detected!

Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers

Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.