Energon prod

The energon prod was a taser-like weapon used by Knock Out that was presumably powered by energon.

History
In 150,082 CMT, Knock Out zapped Rainn Sulrai with his energon prod in an attempt to stun him, but Rainn's unique clone physiology allowed him to withstand the brunt of the energy surge. Knock Out then zapped Rainn in the wrist, which hurt him, but not enough to stop him from scratching Knock Out's paint work with the knife in his other hand.

If the energon prod was still in Knock Out's possession upon his capture and confinement by the Fringe Division, it was most likely confiscated.