Bad Guy Bonus Bio #1: The Leader
"In the early days of the U.N. special agency NERV's battles with the otherworldly menaces they codenamed 'Angels', despite their status as being the only group capable of fending off the creatures, many around the world harbored no small amount of distrust for the organization because of their reach and the amount of capital they required for their operations. Some actually tried to step up and present an alternative to NERV's primary weapons, the giant biomechanical Evangelions, with one such 'competitor' being Japan Heavy Chemical Industries. During the period between the battles with Shamshel the Fourth Angel and Ramiel the Fifth Angel, the company unveiled the result of an initiative headed by one of their top executives, Shiro Tokita. The result in question was a prototype giant robot, Jet Alone, designed with the express purpose to replace and surpass the Evangelions. Tokita touted, among its many features, the computer-controlled robot's use of an internal gamma reactor to power it, unlike the limited power supply the EVAs relied upon. Tokita would be the main speaker at a demonstration event held by the company that was attended by a number of military, political, and industry figures; among the attendees were NERV tactical operations director Misato Katsuragi and NERV head scientist Ritsuko Akagi, the latter of whom Tokita long saw as a rival going back to their college days.
At the demonstration, when Jet Alone was activated, things seemed to go well at first, until the robot went out of control, destroying the hangar it emerged from and making a beeline towards a populated area. Unable to shut it down remotely, Tokita, at Misato and Ritsuko's insistence, tried to get permission from his superiors to hand them the emergency shutdown password for the robot, only to be denied. Reluctantly, Tokita went against his superiors and provided the password, which Misato used to shut the robot down before its reactor could go critical (with help from Evangelion pilot Shinji Ikari keeping the robot at bay in Evangelion Unit-01). In the process of trying to manually shut down the reactor from within the robot, the face shield of Misato's HAZMAT suit cracked, causing her to absorb an enormous amount of the gamma radiation within, thanks to the dormant sensitivity to the energy she'd possessed ever since her being at ground zero of Second Impact as a teenager. Some months and four Angel battles later, circumstances resulted in Misato manifesting uncanny powers and abilities as she transformed into the gamma-based powerhouse dubbed by the press as "She-Hulk".
In that same time period, Tokita found himself shouldering the blame for the failure of Jet Alone, which had resulted in Japan Heavy Chemical Industries being rocked by scandal and on the precipice of bankruptcy. As one of his last tasks before being removed from the company, Tokita was assigned to oversee the decommissioning of Jet Alone, as well as the safe removal of the radioactive materials from its core. While surveying the cleanup operations, Tokita was accidentally sprayed with the gamma-irradiated liquid waste when a barrel containing the material unexpectedly burst open. Showing no ill effects at first, over the next few days Tokita suddenly found himself growing smarter than before, while his skin turned green and his cranium became enlarged. Using his newfound genius, Tokita built a specialized antigravity harness to keep himself balanced. In addition to his intellect, his ego and bitterness over Jet Alone's failure grew, culminating in Tokita 'disappearing' from regular society for a time, as he sought to fine-tune his plans and ambitions. These included building himself an army of both robotic foot soldiers and gamma-mutated thugs, along with the creation of specialized gamma-powered clones (in collaboration with a renegade American geneticist named Miles Warren and utilizing the pilfered files of Ritsuko Akagi's shelved "Project: Titania"); these clones would later become known as Abominatrix (created from the DNA of Ritsuko Akagi), Red She-Hulk (created from the DNA of Evangelion pilot Asuka Langley-Sohryu), and Ms. Fixit (created from the DNA of another EVA pilot, Mari "Illustrious" Makinami). Tokita, at one point, would secretly send out Red She-Hulk to infiltrate NERV and sow confusion, only for her to unexpectedly defect to their side, adopting the name Ruby Shikinami and embracing Asuka as a sister. (At a much further point in time, the clone who would become Ms. Fixit, who hadn't been activated by Tokita, would be accidentally freed in a raid on his secret mountain base, and would find her way into the city of Tokyo-2, where she would be taken in by Yakuza boss Mahiro Babasaki.)
Eventually, following the end of the Angel War, and with it the emergence of the superwomen of Tokyo-3 who united as the Avengers, Tokita reappeared, now going by the moniker of "the Leader". He announced his plans to get revenge on NERV, especially Ritsuko Akagi (who by then had become the hero Spider-Woman), after figuring out her part in the sabotage of Jet Alone. The Leader, with Abominatrix at his side, led an army of specially-built combat droids and gamma-mutated thugs into the Geofront (the location of NERV's central headquarters, at the time still in the process of being decommissioned), only to come face-to-face with a group of Avengers who were already on the scene (with both Spider-Woman and She-Hulk among their ranks). After being reinforced by other members of the Avengers, the team was able to drive back the Leader and his forces, though they would clash repeatedly on a number of occasions. In-between, as the Leader planned and schemed, when things went wrong he would usually take his frustrations out on Abominatrix, who despite possessing the same intellect as Ritsuko never fought back due to the submissive subliminal programming blended in with her implanted memories. In the wake of the superwomen's victory over the planet-eating being Galactus, the Leader began traveling around the world, recruiting a number of super-powered criminals into an organized response to the formation of the Avengers; this would be the first incarnation of a team he dubbed the Masters of Evil."
