Lord Helmuth ruled the Boskone Empire as a tyrant, ruthlessly pursuing universal dominion. Originally believed Kalonian, his true form emerged as a colossal Eddorian entity integrated within the Devil Planet's infrastructure. He commanded Boskone forces with extreme brutality, routinely executing subordinates for perceived failures. Helmuth communicated through projected wireframe images that exposed his Eddorian core, employing this method to inflict remote punishments. His strategies included planetary genocide, enslaving conquered populations via mind-numbing drugs, and deploying Geonium—a weapon inducing excruciating petrification.

He wielded the Devil Planet’s technology for psychological warfare, generating lifelike illusions to instill terror across the galaxy. When the Devil Planet collapsed, he evacuated into space in his Eddorian form, evading capture. During clashes with Galactic Patrol operatives, Helmuth used torture tactics, subjecting Kimball Kinnison’s ally to electric currents as bait. Overpowered during the planet’s destruction, he broadcast Boskone’s headquarters to the Patrol armada before escaping.