Dreadhead is an Nighlok armed with a shotgun with a blade along its underside. He is immune to almost any physical attack. He attacks whatever he considers pointless to exist in order to send humans into a state of utter despair. But as he can be hurt with energy attacks, Dreadhead is destroyed by Jayden using the Beetle Disc's power with the Fire Smasher Cannon Blaster Mode and then destroyed by new Beetle Blaster Megazord. Dreadhead is not as smart as most Nighlok; when he was a Mega-monster, he was unaware that he was vulnerable to energy then physical attacks.
When the camera angle changes to behind Dreadhead, you can see the zipper in the back of the costume