Stinger was one of a number of drones created by KSI, using salvaged supplies of transformium from the remains of deceased Transformers and recycled into raw materials. Stinger was deliberately designed to evoke Bumblebee; the engineers who supervised the creation of Stinger noted that their model supposedly "improved" on the many design flaws that the "antique" Bumblebee possessed. Apparently this was private on my end so here, this bot kinda old