Big Guards (ビッグガード, Biggugādo, lit. "Big Guard") are enemies in Killer Is Dead. They are a common variety of the creatures known as Wires, and originate from the Moon. Big Guards wield formidable mace-like weapons with rotating blades, and are much more powerful than other Wires. As with other types of Wires, Mondo Zappa can use their blood to fuel his cybernetic left arm.