The Hundred Companions were a group of one hundred thirteen young male Aes Sedai from the Age of Legends who were very vocal supporters of Lews Therin Telamon's plan of attacking the Bore directly and sealing the Dark One in his prison. They appeared to have been formed as a reactionary group to Latra Posae Decume's Fateful Concord, an all-female group of Aes Sedai who opposed Lews Therin's plan. During a deadlock of the Hall of Servants regarding which of two plans to win the War of Power should be taken, Lews Therin took the Companions and ten thousand soldiers (considered no more than a security escort) to Shayol Ghul directly and sealed the Dark One's prison, anchoring the barrier with seven seals of cuendillar.
The Dark One's counterstroke, however, killed all but 68 of the Companions and rendered the survivors instantly mad. During the following years, they and all other male Aes Sedai broke the world.