NEEd help about a boss.....

Does anyone happen to know , from the new last update, in Sorrow's Furnace, where the boss Grognar is? Because i have been through the whole frickin Sorrow's Furnace , and i cant find him. So if anyone happens to know where he might be can you please let me know? thx

Grognar spawns in Final Assault, a [former] popular farming route. Look for groups for that, and he should spawn 1/2 the time (alternates between him and Tanzit).

With Sorrow's Furnace, boss locations are random to an extent; certain quests have a list of bosses that can appear.

1. Final Assault - chances are he'll be one of the two Warrior bosses there.
2. Random farming - there are 12 (?) different boss spawn locations; he could be at any of them, last time I checked (which was months ago).

Thx for answering my question, but if you might tell me , is the Final Assault a quest, or is it like a zone . I dont understand . I would also like to know if there is a place , or thing i can go to that tells me what every boss drops. Let me know. thx

It's a quest after you complete the quest "To Sorrow's Furnace".