Voltage Hog was one of the monsters used by Astronema to attack the Earth. It was draining power from various power stations in Angel Grove. It attacked Andros and his thieving friends in their headquarters of stolen vehicles, soon after Andros had discovered they were thieves. Andros protected them anyway, battling him and Ecliptor. When he activated the "saber ignition", Voltage Hog sparked and fell over, then exploded. He was destroyed by the Astro Megazord. A Ranger Among Thieves