Note that LEGO Agents is discontinued. LEGO Agents is a series of LEGO toy sets introduced in 2008 and is based on the secret agent genre. Each set features a mission that pits the LEGO Agents team against the nefarious Dr. Inferno and his sinister cronies. A crazed doctor, Dr. Inferno, often sends his henchmen and cyborgs on missions to steal treasures or terrorise the city. Formerly helping the agents, Inferno lost his arm to an explosion and blamed it on the agents. He established a base at a volcano and hired men to be his henchmen. The agents are always included in a set, along with a special vehicle. The sets serve as story starters, allowing children to link them all together to form a "Master Plan." There are four agents, but later two more appear in Agents 2.0. The many henchmen of Dr. Inferno, most of them are deformed or robots. Dr. Inferno is part robot himself, since his left arm is all metal. The agents have an undercover truck as their base, and Dr. Inferno's is a large volcano. The Agent color scheme is navy blue, lime green, and light grey. Dr. Inferno's goons are orange and black.