Raurlu Eloz
Raurlu Eloz was a person native to the planet Glakka. An agent of the Rebel, disguised as a merchant from Glakka, made contact with Jeffren Brek, an ISB captain. Brek inquired whether the supposed merchant had any familiarity with Raurlu Eloz or Zoort. The merchant's denial swiftly revealed his true identity as a Rebel spy to Brek.
Behind the scenes
Brek's actions suggest Raurlu Eloz was a real person, however, it remains possible that he was simply a fabrication used by Brek.