The 100, formerly known as El Ciento (the one hundred), was founded by 71 men and women from all over Europe who came together in Aragon, Spain in the year 1462, and named themselves El Ciento in order to honor their 29 dead allies. The surviving members of El Ciento combined various scientific, arcane and alchemical methods of life extension in order to render themselves immortal. At a later point in time, they were driven out of Aragon by the Spanish Inquisition, but by then they had granted themselves vastly extended lifespans. They later discovered that the only way they could stay alive was to own the land they lived on and to feed off the despair and negative emotions of the human tenants on their lands; they also learned how to become immaterial and possess human bodies. Though most members of El Ciento feed off human suffering, some few have been able to survive by feeding on positive emotions. The immortal known as Ra's al Ghul considers El Ciento to be a threat to his plans.
A member of El Ciento later established himself in Metropolis's Southside, an area which would later be known as Suicide Slum. The 100 held a firm grip on the city's criminal underworld for years, indulging in crimes such as drug trafficking and racketeering. They later seem to have spread across the country with branches operating in other cities. They have also made enemies of many heroes, including Rose and Thorn (whose father they murdered), Halo (whom they murdered as well as her parents), and Superman himself. As the 100, they fought foes like Black Lightning at the behest of the Metropolis section leader Tobias Whale.
A story in Superman #665 shows that during Superman's early years in Metropolis, there was a smaller organization called the 10, with ties to Intergang. According to Black Lightning: Year One #4 (April 2009), they have no ties to the 100 but may have ties to the 1,000.
The Director of the 1,000 was a U.S. senator named Henry Ballard who shepherded the organization's new direction and goals. Under the Director, the 100 changed its name to the 1,000, where it is attempting to expand their reach to even the Oval Office with Henry Ballard as the presidential candidate. This plan, however, was thwarted and the 1,000 became the 100 again upon retreating into the shadows. As the 1,000 they fought Booster Gold.
Cyclotronic Man — Ned Creegan, accidentally subjected to an experimental "purple light ray". The ray made Creegan's skin transparent so that only his skeleton was visible, and charged him with electricity. As "Bag O' Bones", he fought Batman and Robin. As 100 operative Cyclotronic Man, he later tried to eliminate both Black Lightning and Superman, but was defeated.
Johnny "Stitches" Denetto — A crime boss who had his face peeled off by Tobias Whale back when Denetto used to work for him. Upon being saved by Intergang and joining up with them, Desaad sewed a new face onto him which was made from dead humans and animals.
Pajamas — An unnamed Asian martial artist nicknamed "Pajamas" by Black Lightning.
Steel-Fist Feeny — Francis Feeny possesses a cybernetic right hand made out of steel.
Syonide I — The mercenary called Syonide was hired by Tobias Whale and the 100 to capture Black Lightning and Peter Gambi. He committed suicide after believing he had murdered Black Lightning.
Syonide II — The second Syonide was female. She first succeeded the original as an agent of the 100 and fought the Outsiders. Later, she became a mercenary in her own right, sometimes working together with Merlyn the Archer.
Blackguard — Richard Hertz, an enforcer for the 1,000 who clashed with Booster Gold. Thorn was able to save Booster Gold and Blackguard from being killed by the 1,000. He later reformed and worked with Guy Gardner. Blackguard was killed by General Wade Eiling while serving on the Suicide Squad.
Director — Senator Henry Ballard is the forward-thinking leader of the 1,000. He was later killed in battle against Booster Gold, Blackguard, and Thorn.
Doctor Shocker — Shocker serves the Director as a special interrogator. He specialized in the use of a highly advanced device called a "Psi-tap" that could read and transcribe a victim's thoughts.
Mindancer — A supervillain who drains mental energy from others and stores it for use later as bolts of psionic force. She was second in command of the 1,000 behind the Director. Mindancer recently reappeared as a prison escapee during Infinite Crisis where she crossed paths with Kyle Rayner.
Shockwave — A frequent agent of the 1,000, Arnold Pruett wears a suit of sophisticated armor that endows abilities such as super-strength and generating vibrations capable of leveling buildings. He originally fought Blue Devil. Shockwave would go on to battle Booster Gold and Superman. An action figure for Shockwave was in development for the Super Powers Collection before the line was cancelled.
Richard "Dick" Hertz / Blackguard appears in The Suicide Squad, portrayed by Pete Davidson. He is recruited into the eponymous team for a mission in Corto Maltese, and betrays his teammates by warning the local military of their mission. When he tries to surrender upon making landfall however, he is promptly shot and killed.
^Greenberger, Robert; Pasko, Martin (2010). The Essential Superman Encyclopedia. Del Rey. p. 299. ISBN978-0-345-50108-0.
^As seen in Black Lightning: Year One #4 (April 2009). DC Comics.
^As seen in Batman #195 (September 1967). DC Comics.
^As seen in Black Lightning #4 (September 1977). DC Comics.