The Hidden Forest

I know I've killed this guy in Chardok before but I don't recall where this guy spawns....anyone?

Well, killing all of Chardok a few times worked too.

Apparently he can spawn with Watch Sergeant Riz`oul as a place holder or just a Sergent as a place holder above the gates going down to the first bridge. So there are two named that can be found for the place holder sergeant. As this is where the place holder is indicated on allakhazam.com it seems likely that he will also spawn below the bridges. As stated there:

Torzar

He can spawn in two places. The first is in the left guard tower at the entrance. Ph is A Dizok Sergeant. 2nd place he can spawn is the room where A Dizok Captain(PH) spawns. This room is just down the ramp from the Ancient Guardian and iksar betrayer spawn. Never spent enough time to see if he can pop both places at once but I'm assuming not.

I can confirm the first location. Killed him there many times.

If my memory serves, I killed him at the other location on live once, but never here.