Onomatopoeia
Onomatopoeia is a villian from the DC Comics. He first appeared in Green Arrowvolume 3, #12, written by Kevin Smith and illustrated by Phil Hester. He is often an enemy of Green Arrow and Batman, only speaking in noises as per his namesake. He is a master marksman with advanced handgun training. For this costume guide, the white paint to draw the circles onto the balaclava.