Ging Freecss is the father of Gon Freecss and serves as the central goal driving Gon to become a Hunter. He is a legendary figure within the Hunter Association, holding the rank of a Double Star Archaeological Hunter. His achievements in the field of archaeology are so significant that his methods for preserving and restoring ruins have become a worldwide standard, and he has the qualifications to be promoted to a Triple Star Hunter, though he has never applied for the upgrade.

Ging was born on Whale Island and, just before turning twelve years old, left to take the 267th Hunter Examination, which he passed as the sole successful participant that year. Approximately a decade later, he briefly returned to the island carrying a two-year-old Gon. He entrusted the child to his cousin, Mito Freecss, after losing a custody battle, and then departed again, choosing to remain absent from his son's life. Ging left behind a Nen-inscribed audio cassette for Gon, which contained a message telling his son that if he wanted to meet him, he would have to find him first.

Personality-wise, Ging is a complex and often contradictory individual. He is described as having a shy and stubborn nature, a trait that leads him to insist that Gon meet him alone, refusing to allow his son to bring friends along for support. His friend group notes that he might be wary of crowds. Despite this social awkwardness, Ging possesses a childlike enthusiasm, especially for things he finds interesting, such as the Nen-based game Greed Island, which he primarily created. He is impulsive and often acts before fully considering the reasons for his actions, yet he is also a genius-level intellect capable of creating flawless long-term plans and accurately predicting the behavior of others, including his son and his political rivals. His philosophy centers on enjoying the journey rather than the destination, a value he eventually tries to impart to Gon. While many of his friends and colleagues find him charming, his parenting is widely criticized. Mito and others consider him a terrible father for abandoning Gon, a sentiment highlighted when he refused to visit a hospitalized Gon, telling his friends to go instead.

Ging's primary motivation throughout the story is his own insatiable curiosity and his passion for being a Hunter. He is always after something new, whether it be an archaeological discovery, the exploration of the Dark Continent, or a complex political game. This relentless pursuit of his own interests often comes at the expense of his responsibilities, particularly his role as a parent. In the story, his role evolves from an absent legend to an active participant during the 13th Hunter Chairman Election arc. As a former member of the Zodiacs, an elite group of Hunters hand-picked by Chairman Isaac Netero where he held the codename "Boar," Ging returns to the association's headquarters to help decide the election's rules. He uses his intelligence to outmaneuver the other Zodiacs, ensuring his own set of rules is selected primarily to complicate the process and make it entertaining for himself, while also working to counter the schemes of the vice-chairman, Pariston Hill.

Ging's key relationships are defined by his absence and influence. His entire relationship with his son, Gon, is based on the challenge of being found. While he refuses to be a conventional father, he secretly monitors and guides Gon's development, having designed Greed Island as an elaborate training ground to help his son grow strong enough to reach him. He also has a significant mentor relationship with Kite, whom he trained and who became a Single Star Hunter, fulfilling one of the requirements for Ging's own Double Star status. His relationship with Pariston is one of rivalry and grudging respect, as he views Pariston as a worthy opponent in political gamesmanship. Unlike many others who are frustrated by Pariston, Ging understands his motivations and knows how to counter him.

In terms of development, Ging remains a largely static character who drives the growth of others. His most significant character moment comes at the World Tree, where he finally has a face-to-face conversation with Gon. During this talk, he explains the wider world to his son, including the existence of the Dark Continent, and shares his personal philosophy about enjoying the detours in life. He demonstrates a newfound willingness to connect by exchanging contact information with Gon, even though their relationship remains more like that of two Hunters than a traditional father and son.

Ging's notable abilities reflect his status as one of the world's most powerful Nen users. Isaac Netero himself stated that Ging is one of the top five Nen users in the world. While his exact Nen type is not explicitly stated, he has demonstrated incredible proficiency and versatility. His most remarkable talent is his ability to almost instantly understand and replicate any physical striking Nen ability he is hit with. He copied Leorio's warp punch after being struck by it once and could immediately use it himself, even speculating on its potential applications. He has developed a sensory technique comparable to ultrasound, using aura pulses to map his surroundings and detect organisms, which he considers superior to the standard En technique because it is harder to detect. Ging has also shown immense physical speed and endurance, casually avoiding gunfire from multiple Nen users and spending hours atop the World Tree in harsh conditions without difficulty. Beyond combat, his true genius lies in his mastery of Nen's more creative applications, such as programming the complex systems of Greed Island and imbuing ordinary objects like an audio cassette with specific, conditional Nen effects.