Aulagol

Aulagol was an illithilich wizard and a leader of the illithid city of Ch'Chitl in the Northdark of the Underdark.

History
Aulagol was an Illithid in Ch'Chitl in the mid–13th century DR; during an travel to Astral Plane he was discovered by a raiding party of githyanki that followed him discovered Ch'Chitl. Soon the githyanki assaulted the city and mortally wounded the elder brain. Taking desperate measures, the Ulitharid Thalynsar transformed himself and several other illithids, including Aulagol into liches so they could devour the elder brain, preserve its knowledge and powers, and take its place. Successful in their endeavor, the illithiliches formed a Conclave of Elders, with Thalynsar as the most powerful among them. He tried to retain much of the elder brain's knowledge for him, but the excessive information steadily turned him insane, a trait that Aulagol noted but was too scared by the more powerful fellow to act. Nevertheless, Thalynsar ruled Ch'Chitl for over a hundred years. Finally, around 1370 DR, the other Elders guided by Aulagol united and were obligated to kill the insane Thalynsar. However, they struggled to lead in his place and divide the elder brain's lore.