In the year 0 ABY, the infamous Beilert Valance, a bounty hunter of considerable notoriety, orchestrated a massacre at Anglebay Station, a neutral medical facility situated on Telos IV. This station, providing care to all, found itself the target of Valance's merciless assault. Valance, once a promising commander within the ranks of the stormtroopers, had sustained critical injuries during a battle. Seeking treatment, he arrived at Anglebay Station, where he underwent extensive reconstruction utilizing cyborg technology. Deemed unfit for continued service to the Imperial forces, Valance embarked on a new path as a bounty hunter. However, he harbored a deep-seated resentment towards his cybernetic enhancements, concealing his true form even from his own crew. Driven by a desire to erase his past and eliminate any trace of his transformation, Valance commanded his crew to join him in a devastating attack, aiming for the complete obliteration of the station. Valance's crew, following his orders, invaded the hospital, initiating a brutal campaign of murder against patients and staff alike. A particular animosity was directed towards the droids, reflecting Valance's own internal conflict and hatred. After personally destroying Anglebay Station's data records, Valance and his crew escaped, setting off a series of explosions that resulted in the total destruction of the hospital.

Beilert Valance, a remarkably gifted young commander in the stormtrooper corps, seemed destined for greatness within the Imperial Army. However, his promising career was abruptly cut short on the Outer Rim world of Doniphon. During the Imperial operation known as the Kwymar Suppressions, Valance's ground troops were attacked by Rebel starfighters, resulting in severe injuries to Valance. On the verge of death, he was transported to Anglebay Station, a neutral medical facility located on Telos IV, where his fate hung in the balance. Instead of succumbing to his wounds, Valance underwent extensive cybernetic reconstruction, effectively ending his career in the Imperial Military but granting him a new existence as a cyborg.
With his life irrevocably altered, Valance resolved to serve Imperial justice in a different capacity: as a bounty hunter. Following his traumatic experience, Valance's mental state deteriorated significantly. His intense aversion to his mechanical augmentations and the termination of his military career manifested as a fierce hatred of all droids, coupled with an increased inclination towards extreme violence. Simultaneously, he developed a singular obsession with an unidentified "farmboy" who had participated in the Rebel rescue of Princess Leia Organa from the Imperial Death Star battle station, seeking to punish the fugitive for his apparent association with two droids. Assembling a crew aboard the starship named the Kill Switch, Valance led his team on numerous hunts and raids throughout the Outer Rim, meticulously concealing his cyborg nature. Ultimately, driven by a need to eliminate all traces of his past, Valance instructed his crew to assault and completely destroy Anglebay Station, including all the sick and injured patients receiving treatment there. Although Valance's seasoned crew harbored reservations about the planned massacre, the substantial money offered ensured their compliance.

The attack on Anglebay Station, led by Valance, was executed with utmost speed, efficiency, and brutality. Launching a surprise assault, Valance's crew breached the hospital's defenses, storming the facility and summarily executing medical personnel. Valance delegated the task of rounding up and destroying Anglebay Station's robot orderlies, the targets of particular animosity, to his second-in-command, Slssk. Meanwhile, Valance focused on his primary objective: the station's computer records, which contained sensitive information about his treatment and his cyborg body. He proceeded to decimate the record room, killing several technicians in the process, ensuring the complete erasure of any data related to his transformation.
Concurrently, Slssk, Remel Fud, and several other members of Valance's crew invaded the in-patient wards, systematically moving from room to room and executing any individuals they encountered. In one of these wards, they discovered a dying, delirious man rambling incoherently in his sick bed. However, before they could eliminate him, his ravings took an unexpected turn, as he began to speak of wanted Imperial fugitive Han Solo, a Lepi smuggler named Jaxxon, and an unnamed, mysterious "boy" accompanied by a droid. Slssk and Fud promptly relayed this information to Valance, who found it particularly intriguing, as Solo was a known associate of Valance's farmboy and had a significant bounty on his head. With his next objective in mind, Valance boarded the Kill Switch and departed, triggering a series of explosions that completely destroyed Anglebay Station and left no survivors.
The dying man's ramblings on Anglebay Station led Valance to believe that his path to Solo, and consequently his elusive "farmboy," lay through Jaxxon. Consequently, Valance dispatched Fud to locate him at the Lepi's base on Nar Shaddaa. Although Jaxxon managed to evade capture, the Kill Switch tracked him and his partner Amaiza Foxtrain to the Outer Rim farmworld of Aduba-3, where they had traveled to warn the "boy" of Valance's pursuit. Valance and his crew arrived on Aduba-3 shortly afterward, but almost immediately stumbled into a trap orchestrated by Jaxxon, Foxtrain, and a group of local villagers, resulting in the deaths of many of Valance's men in a bantha stampede. Valance himself survived the attack only to realize that Jaxxon's "boy" was not the Rebel he was searching for, but rather a local farmer named Jimm Doshun, who had previously assisted Jaxxon and Solo in defending his village from a swoop gang. Recognizing his error, Valance erupted in hysterical laughter before retreating into the stars to continue his hunt alone.
The attack on Anglebay Station by Beilert Valance was featured in Star Wars (1977) 16, penned by Archie Goodwin and released in 1978. The battle was visually depicted by Walt Simonson in its original appearance.