Seia Doon are often used in the questioning of prisoners, as well as Far Dareis Mai.. The Black Eyes are specialists in fighting during the twilight hours, and are excellent at finding their way in little to no light.
Members of the Seia Doon, along with members of the Aethan Dor, Far Aldazar Din, Duadhe Mahdi'in, Far Dareis Mai, and Sha'mad Conde, helped Rand al'Thor find a Portal Stone outside Tear. As they are traveling through the Three-Fold Land, members of the Seia Doon escort Hadnan Kadere's wagons. When Couladin defies Aiel custom and tradition by claiming he is the Car'a'carn, the rest of his society, the Seia Doon, vow to kill him.. All of the societies, including the Seia Doon, accompanied Rand from the Sun Palace in Cairhien to Caemlyn in Andor to battle Rahvin and his forces. Seia Doon is one of the societies that guard the Sun Palace while Rand is there. Seia Doon, Shae'en M'taal, and Far Dareis Mai are all very touchy about ji'e'toh.