The Merchant said: The Sith corsair?
yup
The Merchant said:
Cause Revan and Malak took over a good chunk of the Galaxy while the Sith Brotherhood had a small amount, not to mention Malak bombed and left so many planets dead. I don't recall Kun and Ulic doing that.
Have you heard of the Dark Reaper? Did you see the map in The Essential Atlas?