In the Babylon 5
universe, the most important figure in Minbari
mythology. Supposedly "a Minbari not born of Minbari," he brought assistance to the Minbari to help them defeat the Shadows
, then organized the Grey Council
and the Anla'shok
. He made many prophecies about the future as well.
Valen was really Jeffrey Sinclair, who traveled back in time with the Babylon 4 space station and entered a chrysalis to make himself Minbari in appearance.