Colonel Jrgens commands as a high-ranking officer in the Death Force, the military branch of Leader Zytel’s Gothamite survivors. Entrusted with executing Earth’s invasion and terraforming, he orchestrates offensives against human resistance forces, zeroing in on the submarine-turned-spaceship Blue Noah. Driven by a personal vendetta, his ruthless tactics stem from the vessel’s history of dismantling Gothamite assets—sea fortresses and gravity control bases pivotal to terraforming Earth.

His influence manifests through direct advisement to Zytel, whom he ceaselessly prods to amplify assaults on Blue Noah. In the decisive space engagement, he pushes for expanded reinforcements to annihilate the threat, exemplifying his fanatical focus on conquest. This zeal crumbles when he discovers Terror Star’s failing life-support systems—a vulnerability Zytel hid to preserve dominance over the Gothamites.

Jrgens’ arc culminates during the battle near Terror Star, where Blue Noah’s allies expose the satellite’s decay. Faced with the invasion’s impossibility amid the compromised infrastructure, he watches Gothamite forces collapse under relentless attacks, their mission ending in operational ruin.