Jax Burton comes from a low income household from one of the many farms on Planet Denver. Even from a young age, he had ambitions that he would always be told out-stripped his place in society. Determined to prove them wrong, he pulled himself up by the bootstraps and managed to secure himself a foothold within the LSF at the age of 24 after serving under the LPI, then the Navy afterwards. However, following the events surrounding Erie, he tendered his resignation due to disagreements with leadership on how the situation was handled.

When he separated from the LSF, he retreated to home base on Planet Denver where, for a few months, he helped his family run the farm. However, his ambitions would once again come to the forefront and he founded Horizons LTD. with himself as the sole employee. The companies purpose was to explore and survey every known region of space. Using his connections from his time in the LSF, he sourced just over one million credits, plus his life-savings. With these credits, he purchased and retrofitted an aging Regent Luxury Liner heading for the scrapyards.

Captain Mike Hawthorne is a close friend of Jax which is ironic considering their backgrounds couldn't be any different. The two went through training together aboard West Point during their days serving in the Navy. However, where Jax came from humble beginnings, Mike came from an affluent family living on Manhattan. Hating the decadence that his family members threw around, he elected to join the Liberty Navy, effectively throwing away any future fortune after he was disowned by his influential father following his graduation from West Point.

Recently separated from the Navy, he has joined Jax's company with the position being Executive Officer, or XO. A military man through and through, he runs a tight ship and ensures that crew discipline is top notch. He works hand in hand with Charles Bentley, the Security Chief aboard the Horizon Seeker, to ensure that everyone is prepared for any event in which violence is necessary such as any attempted boarding of third parties, pirating attempts, and otherwise.

Tiffany Kubota is often jokingly referred to as the brains of the entire Horizons Project. Being the science officer, and the only non Liberty personnel on the project, she is often overlooked concerning any task other than scientific problems. Though, despite her small stature and upbringing, her personality is often larger than life and boisterous to boot. She was born to two Samura scientists on Planet Junyo. However, there were complications with her birth as her right arm was malformed due to a birth defect and needed to be removed. Despite this, her parents connections within the greater scientific communities in Kusari enabled her to get various cybernetic prostetics which were all cutting edge throughout her childhood. Following the collapse of the scientific community in 824 due to the seizure of Kurile by the GMG, her parents elected to retire early instead of journeying out to join another scientific study.

She was intending to join Samura as her parents did when she was contacted by an LSF agent she had met when she first began her internship with a subsidiary of Samura. Jax Burton had stayed on Junyo following a classified mission some years prior and had left an impression on the young woman. He got to know her during his stay and after his departure the two had kept in touch through the years. Jax was preparing a journey to the possible edge of known space and despite her specializations in Marine Biology much like her parents before her, she yearned for discovering mysteries in the great beyond. She quickly agreed to join the crew in their wanderlust to the great beyond.

While much of the crews histories are known, Charles Bentley is an enigma wrapped in a mystery. Refusing to elaborate how he knows Jax, and Jax doing the same, the past of Bentley is unknown. The truth of the matter is he was once an underworld smuggler with connections to various shady organizations throughout Sirius. However, during a particularly violent operation gone wrong, many of those connections now want him dead. Seeing an opportunity to reinvent himself, Charles Bentley was born with Jax utilizing his former contacts and favors to ensure that the man had a squeaky clean record.

Bentley works closely with Mike Hawthorne to ensure that the crew is prepared for any event in which violence is required. The duo's pasts mesh well together with their considerable histories from both sides of the law. The two are often found "debating" the rights and wrongs of various theoretical situations with neither willing to give ground on their beliefs. While it hasn't come to blows yet, Jax has warned if it does then they will both have to suffer the consequences.

Tori Shumaker is the last of the senior crew aboard the Horizon Seeker. Her position is that of Chief Engineer and she was the first of the crew to come onboard shortly after the ships purchase. She put her considerable knowledge of her past life as a Junker into retrofitting and converting the aging Regent frame into what it is now. She grew up as a Junker aboard Rochester in New York and had a chance encounter with Jax during a particularly violent encounter with a Xeno raider. Jax managed to save her by neutralizing the errant raider, but scanned her and noticed the illegal contraband in her hold. He'd given her a choice at the time, surrender the cargo and get arrested, or keep the cargo, sell it, and work for him as an operative. Considering her options, she chose the latter choice. When Jax retired, she had been cut loose to continue her career as a Junker. However, during their tenure together, they had formed a close relationship that bordered on romantic.

When Jax reached out to her offering her the position of Chief Engineer on the Horizon Seeker, she jumped at the opportunity to be with Jax again. She claims that the reason she jumped at the opportunity was to be able to work on a Regent, but it's apparent her reasons for joining the crew. She often butts heads with Tiffany Kubota on the finer points of engineering and the two can often be found hurling insults at one another from across the engineering and science bays on any given day.