Moz is a major supporting character who first appears during the Treasure Island Arc of the series, serving as the marshal and right-hand man to the island's head. He is renowned as the strongest warrior of the Petrification Kingdom, a title he shares with Kirisame. In public, Moz acts as a devoted sidekick to the island's head, but he is fully aware that the true head has been killed and that Ibara is secretly controlling the island. He is initially a secondary antagonist and is deeply loyal to Ibara, working closely with Kirisame to suppress any threats to the Petrification Kingdom's rule.

Physically, Moz is a tall, muscular young man with brown dreadlocks tied into a low ponytail and brown eyes. He wears stone pauldrons, which are destroyed during his fight with Hyoga and later replaced while in America. His fighting ability is formidable, and he is considered one of the two strongest warriors in the kingdom, making him a major obstacle for the Kingdom of Science during the Treasure Island conflict.

Moz's motivations are primarily tied to his loyalty to Ibara and his desire to maintain his position as the island's strongest defender. He shares similar ideals with Ibara, prioritizing strength and control over the island's inhabitants. However, after Ibara's defeat, Moz undergoes a significant change. He is revived by the Kingdom of Science at the behest of Hyoga, who recognizes his value as a powerful ally. Following his revival, Moz shifts from an antagonist to a supporting figure within the larger coalition, lending his combat skills to the Kingdom of Science's global mission.

Key relationships include his partnership with Kirisame, with whom he works as the kingdom's dual enforcers, and his adversarial yet respectful dynamic with Hyoga, who ultimately ensures his revival and integration into the team. His loyalty evolves from serving Ibara to becoming a useful asset for the Kingdom of Science, allowing him to continue fighting as a warrior but now on the side of Senku's vision for humanity's restoration.

In terms of development, Moz transitions from a ruthless enforcer of Ibara's will to a reformed and cooperative ally. He retains his combat prowess and warrior instincts, but his role expands into supporting the Kingdom of Science's expeditions during the Science Future arc, particularly as they travel to America. His notable abilities lie entirely in his physical strength and combat skill, as he has no particular scientific expertise. He relies on his raw power and fighting experience, making him one of the most capable hand-to-hand combatants in the series.