Sonic Batarang (Arkhamverse)

The sonic batarang was a modified batarang which was used in Batman: Arkham Asylum, Batman: Arkham City, and Batman: Arkham Origins. Its main function was to lure thugs into vulnerable places in order to provide a strategic advantage in terms of takedowns.

Gameplay
When thrown, the sonic batarang would emit a high pitched noise which could attract a single thug towards its position. If the thug found the batarang without being interrupted, he would then destroy it by stepping or shooting it. This gadget comes in handy for silent takedowns from behind while the thug is distracted, or inverted takedowns if the batarang was thrown underneath a vantage point. Furthermore, it could be upgraded with the Sonic Shock Batarang Waynetech upgrade, which allowed it to emit an electric which could incapacitate any thug that was close enough to it. This, however, would render the sonic batarang unusable for the rest of the level until the player entered a new area.