Why has there been so little mention of them?
I know they were mentioned in KOTOR I & II and Revan and Exile went off to battle them and according to kraya she doesn't believe Revan was a success in setting of to do what he had to do.
Other than that I have seen no mention... i don't know if there is a book or comic about them could anyone help?
They are just something created to generate interest in KOTOR III ( which is never going to be made) since the developers knew most fans would be disappointed by KOTOR II