Wait, what was the answer to this? I was reading Revan's entry on Wookiepedia last night, and it said that he killed Malak. So, how is Malak still alive in SWTOR?
Oh, wait, nevermind, I'm confusing Malak and Malgus? They both have the Vader-esque breathing mask things, huh?
Malak died. It is thought that Malgus died, but no one saw the body, so its all speculation until we get some answers