Tonzet, hailing from Ukio, was a male Ukian individual who made his living as a farmer. During the time of the Clone Wars, he harbored a deep distrust for the Galactic Republic, openly dissenting against Ukio's agreement to provide sustenance to the Grand Army of the Republic. Despite his negative feelings towards the Republic and his desire to keep outside forces out of Ukian matters, he maintained a friendly relationship with Sanya, a representative from the Agricultural Corps of the Jedi Order. Later, Tonzet sustained injuries during a battle that took place on Ukio.
During the Clone Wars, Tonzet, a male Ukian, worked as a farmer residing on Ukio. He worked alongside another Ukian, as well as Sanya, a Devaronian member of the Agricultural Corps belonging to the Jedi Order. Tonzet grew annoyed when a Galactic Republic force arrived on Ukio to examine the planet's defensive systems. While his Ukian colleague suggested their presence was the reason they had jobs, Tonzet disagreed. He had a suspicion that the Republic would eventually betray them and use their superior military strength to take whatever they wanted from Ukio. His colleague dismissed these anti-Republic sentiments, and when Sanya arrived, she remarked that the crops themselves were loyal to no one.
Tonzet was happy to see Sanya, as she had been working on a new burrmillet crop. He asked about her progress, which was going well, but she wondered if he considered her to be one of the "Republic meddlers." The Ukian denied this, stating that he knew her, and the Devaronian suggested that he make an effort to get to know the newcomers as well. At that moment, Tyzen Xebec, the Zabrak Padawan leading the Republic team, approached and inadvertently insulted Sanya by calling her a "wash-out" for serving in the AgriCorps instead of the main Jedi Order. Offended, she jokingly told Tonzet to disregard her suggestion to get to know the newcomers. Later, when the Confederacy of Independent Systems tried to make Ukio unusable for the Republic's war efforts, Tonzet suffered a head injury. After the Republic successfully repelled the invaders, a 2-1B surgical droid provided Tonzet with medical care as he recovered. Eventually, the Republic forces were compelled to withdraw when the Confederacy acquired a controlling interest in Ukio.
Tonzet, a patriotic person, stayed informed about current events and developed his own political views based on what he learned. He held the Galactic Republic in contempt and was doubtful of their intentions. While he understood that their presence provided him with work, he suspected that the government would eventually turn against Ukio and demand resources, given their superior weaponry. However, he appreciated Sanya the Devaronian more, simply because he knew her, whereas the Republican visitors were complete strangers.
Tonzet's debut appearance was in The Clone Wars: Act on Instinct by Pablo Hidalgo, released in 2009. He was first shown in the sixth part of the webcomic.