In the year 228 BBY, the Jedi Order initiated a quest to locate Marchion Ro, aiming to capture and neutralize the threat posed by Eye of the Nihil Marchion Ro. Following the provision of several locations frequented by Ro, revealed by Nihil Minister of Information Ghirra Starros, the Jedi concluded that Ro's investigation centered on a disease called the blight. They also suspected a connection between this blight and the resurgence of the Drengir, sentient carnivorous plants. Selecting the planet Vixoseph I as a potential destination for Ro, a contingent comprising Jedi and Republic Defense Coalition personnel journeyed to the world. Although Jedi Knight Vernestra Rwoh confronted the Eye on Vixoseph I, he managed to evade capture. On the subsequent day, Ro himself materialized on Coruscant, a Core Worlds planet, where he conveyed to the Jedi and the Republic that he represented their sole prospect for overcoming the blight plague, which had been manifesting throughout the galaxy.
The hunt for Marchion Ro was initially depicted in The High Republic: Temptation of the Force, a 2024 novel authored by Tessa Gratton. This novel was released as a component of Phase III of the Star Wars: The High Republic multimedia initiative.