User blog comment:Kltt05/Review For Missing In Action/@comment-2158685-20130106041501

I don't think he died. Katarn armor (republic commando armor0 is able to withstand acid, so it's not likly he perished in the explosion. Plus in trailers for Season 5 there are several other shots of Gregor fighting a full company of SBD's. I think that he'll be in another episode.