Jacob Halm occupies a directorial position in E=X, the organization governing Eden City’s omnipresent information infrastructure, “The System.” Tasked with safeguarding the network’s integrity, he enforces rigorous compliance with its protocols and spearheads operations against netjackers—hackers infiltrating the network illegally. Despite Eiji Takanaka’s history of unsanctioned breaches, Halm strategically recruits the skilled hacker into E=X, valuing his technical prowess as a tactical advantage.

A pragmatist with an authoritarian streak, Halm delivers impassioned rhetoric framing The System as Eden’s indispensable guardian against chaos. He deploys Eiji aboard a Garland, a transformable pursuit vehicle, to hunt netjackers—a decision reflecting his willingness to exploit talent for institutional objectives. Over time, his adherence to protocol hardens into dogma, sidelining moral nuance in favor of unwavering systemic preservation.

Halm’s tactics intensify as dissent mounts. He authorizes invasive neural modifications to reprogram Eiji’s mind, targeting threats like Sion, a rogue operative. This radicalization mirrors his escalating allegiance to The System, even as its vulnerabilities and the hidden agenda behind “Project Heaven”—a scheme to propel Eden into space—emerge. He becomes a staunch adversary to those challenging the network’s dominance, framing opposition as existential peril.

Though his origins remain undisclosed, Halm’s ideological evolution anchors his arc. His conflict with rebels seeking to dismantle The System crystallizes his role as an antagonist emblematic of institutional absolutism, personifying the tension between collective control and individual autonomy.