Tsezguerra is a Single-Star Jackpot Hunter, recognized by the Hunter Association for remarkable achievements in his field. He partnered with the billionaire Battera to complete the video game Greed Island, leveraging his extensive experience as a player who had already cleared roughly 80% of the game. He tested potential recruits for Battera's team, initially failing Gon and Killua during their first screening due to their underdeveloped Nen abilities; they later passed his evaluation after intensive training. He appears as a lean, above-average height middle-aged man with broad shoulders, a long face featuring sharp cheekbones, and slicked-back black hair. His look includes a beard along his jawline, thicker on the chin, a thin mustache angling downward at the corners of his mouth, and contrasting gray eyebrows. He frequently wears an Air Force-style combat suit. His personality blends pragmatism with occasional condescension. He openly dismisses those he deems weaker, shown by his initial skepticism toward Gon and Killua. He demonstrates prudence by only undertaking challenges within his capabilities. When Gon and Killua surpass his Nen proficiency during a test, he conceals their success by falsely claiming they failed to beat his personal record, revealing professional insecurity. Following a defeat during the dodgeball match against Razor, he acknowledges his skills have dulled and commits to retraining Nen fundamentals, showing capacity for self-reflection. Within Greed Island, Tsezguerra led his own team while coordinating with Battera's objectives. He maintained rivalries with other player alliances like Nickes's group, which held comparable card collections. His strategic acumen surfaced during negotiations with Genthru for a "Patch of Forest" card; leveraging knowledge of Genthru's monopolies on "Angel's Breath" and "Night Jade", he brokered a trade. This transaction resulted in an ambush by Genthru's allies using Risky Dice and Tax Collector's Gauntlets, stealing several cards from Tsezguerra's team, including their monopolies on "Levitation Stone" and "Witch's Rejuvenation Potion". Post-ambush, he deduced Genthru's identity and prioritized securing the "Plot of Beach" card to prevent its acquisition by adversaries. Tsezguerra later joined Gon's coalition to challenge Razor for the "Plot of Beach" card. Recruited by Goreinu under negotiated terms, his inclusion was justified by his team's strength and game knowledge. During preparations, his competitive nature resurfaces when Gon and Killua exceed his Nen-based jumping height, though he participates alongside them in the volleyball trial. He contributes to the dodgeball match against Razor's pirates; his performance against a pirate boxer reinforces his earlier resolve to retrain after recognizing his diminished combat reflexes.