Dasariah Kothos, a Dark Jedi of the Human species and male gender, held a significant position within the Disciples of Ragnos cult, reaching the upper echelons of its hierarchy.
He and his twin brother, Vil, were collectively known as either the "Kothos Twins" or the "Reborn Twins," becoming iconic figures within the cult and formidable adversaries for any Jedi. Unlike the majority of Tavion Axmis's New Reborn followers, Dasariah opted not to wield lightsabers, instead relying on his exceptional command over the dark side of the Force, coupled with Force-augmented acrobatic maneuvers.
Both twins were regarded as masters in the dark side of the Force, with their abilities in that area possibly surpassing even Tavion's, who primarily focused on lightsaber combat.
Dasariah Kothos was recognizable by his orange battle suit and his unusually deep voice, which instilled fear in many sentient beings.
The twins accompanied Tavion Axmis to the Massassi Temple located on Yavin 4, where she used the Scepter of Ragnos to extract Force energy from the temple. Later, they provided assistance to Rosh Penin during his duel with Jaden Korr within the Bast Castle situated on Vjun, bolstering Penin's power through the Force. Korr understood that to stand a chance against Penin, he first needed to overcome the twins while simultaneously defending against Penin's attacks. The twins exerted all their power to prevent Korr from harming Rosh.
Despite their considerable power in the Force, Korr ultimately defeated and killed both twins before vanquishing Penin. Their impressive abilities were ultimately insufficient to overcome Jaden Korr, and the twins met their demise on the cold floor of Bast Castle, consumed by the dark side of the Force.