Reth'hedron the Subduer
From WoWWiki
Reth'hedron the Subduer is a level 73 elite eredar found in Twilight Ridge in Nagrand. He is the leader of the Burning Legions forces in Nagrand.
Quest involvement
He is part of the Netherwing quest 
[70] Subdue the Subduer.
Quotes
(During Subdue the Subduer:)
- I WILL CRUSH YOU LIKE A GNAT!
- What do you hope to accomplish from this, insect?
- You are making me angry, mortal!
- (upon defeat) You will regret this, mortal! Reth'hedron will return... I will have my vengeance!
He may or may not yell any of these quotes at any given time you fight him.
