Depth Charge (also Depthcharge) was once an Imperial Peace Marshal whose territory was completely destroyed, and every robot under his protection slaughtered, by the malicious entity known as Protoform X. Since that fateful day, Depth Charge has lived for no other purpose than to enact justice (or vengeance) on X. His single-mindedness makes him a relentless hunter, stopping at nothing to prevent X from taking any more lives. His quest has more than taken its toll on Depth Charge.