Zero is a mysterious secret society who made a contract with the BAD organization and major antagonists in episode 20 of Robot Detective. Their leader is an unnamed individual known only as "Boss".
History[]
Zero sought to extort 1,000,000,000,000 Yen from the Japanese government by dropping a Hydrogen bomb on Tokyo via a blimp and threatening to drop more unless the ransom was paid. They hired the BAD organization to assist them in this goal, to which BAD provided them with their humanlike android Lin and their Murder Robot Gyoraiman to guard her. Lin tested Zero's plan to drop a bomb on Tokyo by sending a small BAD balloon along the route to see if it would work. The test was a success, but Lin was caught by the police.
K managed to destroy Gyoraiman but Lin was able to escape and return to Zero's base. Shiba and Shinzo then attempted to infiltrate the base by going undercover as construction workers, but they were caught and brought before Zero's leader. However, K managed to locate the island and arrived to rescue them, fighting off the BAD Agents that were guarding it. Shiba and Shinzo managed to corner the Boss of Zero to arrest him and stop the blimp, but the Boss threw the control for the blimp in the water to keep them from being able to stop it. However, K was able to intercept the blimp on his flying Joker car and disable the H-bomb before safely leading it away, thwarting Zero's plans.
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 Villains
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BAD Others | ||