What comic series are Exar Kun and friends in?

I was at the book store and saw some SW comics like Sith Wars and such. Then I wondered which series Kun and such were in. Does anybody know?

Exar Kun is the main villain, but the main characters of the comics are Ulic and Nomi, mainly.

But the comics in which specifically Exar Kun appears in are TOTJ: Dark Lords of the Sith and TOTJ: The Sith War.

I'd reccomend picking up TOTJ: Knights of the Old Republic and TOTJ: Redemption as well. All 4 kinda roll in together.

The earlier two (TOTJ: Golden Age of the Sith Empire and TOTJ: Fall of the Sith Empire) are kinda boring.

Or just go to http://www.swcomics.com/ and read them for free.