Quilo Zanx was a Jedi Knight of the Jedi Order during the Republic Era, hailing from the Anx species. During the Clone Wars period, specifically between 22 BBY and 19 BBY, Zanx held the ninth position on the lightsaber dueling room rankings within the Jedi Temple situated on the planet Coruscant. However, during this time, Jedi Master Kelleran Beq brought a Jedi Knight to the training facility who then challenged and defeated Zanx in a lightsaber duel for training, causing Zanx to fall to tenth place in the rankings. Jarn possessed yellow skin and brown eyes. Their attire consisted of brown Jedi robes complemented by a tan outer garment and a black belt, and they wielded a lightsaber with a green blade.
Quilo Zanx made an appearance in Star Wars: Path of the Jedi, which is a non-canon downloadable content (DLC) story adventure released in 2023 for the video game Minecraft, originally released in 2011, and developed by Mojang Studios and Spark Universe. Leland Chee, an employee of Lucasfilm and the keeper of the Holocron continuity database, communicated through a private channel that there were currently no plans to feature characters like Zanx, Larno Ruhuk, and Thelo Jarn, who all originated in Path of the Jedi, in any other media. However, Chee did suggest that their inclusion remained a possibility if a Star Wars creator desired to incorporate them, implying that Zanx could potentially appear in a story that required an Anx Jedi.