Neural Pellet

A Neural Pellet is an explosive-like gadget used by Deathstroke. It is a compact mine that can be placed on an enemy. When activated, via separate remote, it releases an orange gas that disrupts their nervous system, leaving them blind and open for attack.

Arkham Origins Incident
If the player chose to play as Deathstroke, they were granted the ability to place a neural pellet onto their enemies. Deathstroke could only hold three pellets.

Trivia

 * Despite being based on Robin's Snap-Flash, it is less useful than Snap-Flash. The Snap-Flash has a larger Area of effect, and knocks out any thugs near it, leaving them open for a Ground takedown. The neural pellet has a very small Area of effect and only momentarily makes thugs flinch.
 * In addition, due to a glitch, snipers usually turn around at the exact same second the Neural pellet is planted, ruining stealth.