Vol'jin right from the get-go wasn't a fan of Garrosh. This is part of the intro quest for new troll players.

Vision of Garrosh Hellscream says: Don't talk back to me, troll. You know who was left in charge here. Haven't you stopped to ask yourself why Thrall chose me instead of you?

Vol'jin's image appears.

Vision of Vol'jin says: Dere be no question why, Garrosh. He gave ya tha title because ya be Grom's Son and because tha people be wantin' a war hero.

Vision of Vol'jin says: To which I tink ya be even more like ya father den he thought, even without ya havin' da demon blood.

Vision of Garrosh Hellscream says: You are lucky I don't gut you right here, whelp. You are foolish to think that you can speak to your Warchief in such ways.

Vision of Vol'jin says: Ya be no Warchief of mine. Ya've not earned my respect and I'll not be seein' tha Horde destroyed by ya foolish thirst for war.

Vision of Garrosh Hellscream says: And what exactly do you think that you'll do about it? Your threats are hollow. Go slink away with the rest of your kind in the slums. I will endure your filth in my throne room no longer.

Vision of Vol'jin says: I know exactly what I'll be doin' about it, son of Hellscream. I'll be watchin' as ya people slowly become aware of ya ineptitude. I'll laugh as dey grow ta despise ya as I do.

Vision of Vol'jin says: And when tha time comes dat ya failure is complete and ya "power" is meaningless, I will be dere to end ya rule, swiftly and silently.

Vision of Vol'jin says: Ya will spend ya reign glancin' over ya shoulda and fearin' tha shadows, for when tha time comes and ya blood be slowly drainin' out, ya will know exactly who fired da arrow dat pierced ya heart.

Vision of Garrosh Hellscream says: You have sealed your fate, troll.

Vision of Garrosh Hellscream spits at Vol'jin's feet.

Vision of Vol'jin says: And you yours, "Warchief".