For decades before the Yuuzhan Vong invaded the known galaxy, their Advance Agents were positioned in the Republic (Later the Empire, and later still The New Republic). The Advance Agents watched, waited, and sowed the seeds of doubt and discontent, undermining the populace's faith in galactic authority and precipitating interstellar crises.
Nom Anor was one such Yuuzhan Vong, an agent provocateur who specialized in political maneuvering, such as working behind the scenes to help engineer the collapse of the Empire after Palpatine's death. He also engaged in more overt rabble-rousing, such as when he led the Red Knights of Life, an extremist group on Rhommamool with an anti-Droid, anti-Jedi, and anti-technology ideology. Just prior to the Yuuzhan Vong invasion, Nom Anor had managed to escalate tensions between Rhommamool and her sister planet Osarian to the point of open war. Nom and other Advance Agents specialize in propaganda, lies, and treachery, and their efforts helped the Yuuzhan Vong invasion bring unimaginable horrors to the galaxy.