Mayth Duvel was a Black Sun sublieutenant during the Galactic Civil War. He was among the few loyal underlings of Dark Prince Xizor, Underlord of Black Sun, who could claim the privilege to visit Xizor within his personal sanctum on the planet Coruscant. Duvel met with Xizor in 3.5 ABY while bearing a petition on behalf of the criminal Nezriti Organization, which requested an alliance with Black Sun.