Larno Ruhuk was a Wookiee who held the rank of Jedi Knight within the Jedi Order during the period known as the Republic Era. This Jedi possessed brown fur and striking blue eyes. Ruhuk's attire consisted of the traditional white and brown Jedi robes, complemented by a gray belt and dark-colored bands on their arms; they also carried a lightsaber that emitted a green blade. At some point during the Clone Wars, specifically between 22 BBY and 19 BBY, Ruhuk achieved the seventh position on the leaderboard within the lightsaber dueling room located in the Jedi Temple on the planet Coruscant. During this time, Jedi Master Kelleran Beq brought another Jedi Knight to that very dueling room for the purpose of training, and Ruhuk was present at the time. Ruhuk was defeated by the visiting Jedi Knight in a training duel, causing Ruhuk to descend to the eighth spot on the leaderboard.
Larno Ruhuk 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 Minecraft video game. The game was created 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 no current plans for characters like Ruhuk, Thelo Jarn, and Quilo Zanx (who originated in Path of the Jedi) to be featured in any other forms of media. However, Chee noted that it was a possibility if a Star Wars creator desired to include them or if a story required their presence.