Adler Einstein is the primary antagonist, commanding the antagonists and directing their activities. His central objective is developing and deploying a robotic killing machine against the impoverished residents of the Cancer Slums in Cyber-wood, driven by an ideology of purification through destruction targeting those he deems socially undesirable.

This stems from a deep-seated resentment toward societal structures, particularly class divisions, which fuels his antagonistic actions. He operates within a future city plagued by widespread violence, where the Central Guard Company seeks solutions to urban crime. Adler Einstein represents one extreme approach, utilizing advanced lethal technology.

He possesses significant psychic abilities, shared with the protagonist John Stalker, playing a key role in their conflict. His role directly opposes the testing and deployment of the Guard Suit, another technological solution within the organization.

Previously associated with the Central Guard Company, his divergence into villainy links to his ideological convictions about societal purification and the perceived necessity of eliminating the Cancer Slums population. His operational methods involve advanced weaponry and strategic assaults.

Character development remains unresolved as the narrative is incomplete; originally conceived for multiple episodes, only a single OVA was produced. His ideological journey, potential motivations beyond class resentment, and ultimate fate were never fully realized. No canonical expansion detailing his background or development has been documented.