The Ardennian Guild of Technicians functioned as a guild for technicians throughout the High Republic Era. In the year 231 BBY, Retar, an Ardennian who was a representative of the guild, was present at the Republic Fair on Valo, a planet located in the Outer Rim. Jedi Master Stellan Gios and Retar spoke for some time regarding starship maintenance, after which OrbaLin, a Jedi archivist, escorted Retar to the Secrets of the Jedi exhibit at the fair.
In Cavan Scott's 2021 novel, The High Republic: The Rising Storm, a member of the Ardennian Guild of Technicians made an appearance. The novel was written for Phase I of the Star Wars: The High Republic multimedia project.