Beidomon

From A Wheel of Time Wiki

Beidomon was a male Aes Sedai who was one of the world's top researchers at the Sharom in the Age of Legends.

He was part of the research team that drilled the Bore through the Dark One's prison. When the results of the drilling became apparent he tried to be forgotten but it was impossible, everybody knew who he was. In the end he killed himself some time before the ending of the Age of Legends.