Dernas, a Human of the male persuasion, held the position of High Lord within the Lost Tribe of Sith during the era of the Mandalorian Wars - a period marked as 3960 BBY in the galactic timeline. He was also the head of the Red Faction.
While attending a rake-riding competition in the city of Tahv on the planet Kesh, Dernas met his end. He was beheaded by Flen and Sawj Luzo, along with Pallima, who was the head of the opposing Gold Faction. This occurred after Campion Dey, an uvak wrangler, orchestrated an assault on Grand Lord Lillia Venn.