Royal Troopers were soldiers with genetic tampering that followed a training regimen similar to that of the Emperor's Royal Guard, Royal Troopers made up the main force of the Protectorate. Due to their heavy genetic modifications, Royal Troopers possessed an unwavering loyalty to Darth Vidious. The exact number of Royal Troopers was unknown. Royal Troopers were based out of the rebuilt Imperial Royal Guard Academy on Yinchorr, a planet that was void of life due to airstrikes performed by the Galactic Empire decades ago.