Horde Hunters are able to accept this quest from the image of Mimiron located in the area where the Caravan Brutosaur Vendor is at. If you look at the Dazar'alor map, you will see the quest marker. I'm assuming that Alliance Hunters will find their quest giver by checking their Boralus map.
~There is a stable master located next to Thorim.
~From what I have seen, other hunters are not able to see/interact with the Hati that you summon.
~The Hati related items that the vendor sells are all consumables so be prepared to purchase a lot if you don't have any plans on making regular trips back to the area.
I'm not sure when they changed it in the PTR, but the Mimiron located in True Shot Lodge no longer gives you this quest.
I recommend taking one or two Inter-dimensional Companion Repositories before you start this quest line.
The quest beings in Boralus with the image of Mimron, located between the transmog NPC and the Snug Harbo Inn.
After many deaths and some trial and error, I discovered that you have to be within MELEE range of Hati for the essence collector to work. If you attempt to shoot Hati from range, he will root you for 20 seconds and summon three arcane balls of energy that explode when they hit you, doing MASSIVE damage. And now you're dead. He also casts a straight line of frost energy toward your direction. This will interrupt your attempt to collect his essence. But you eventually get it all. A dwarf, Grif Wildheart, and Thorim will assist you during the two battles with Hati. Be prepared for a lot of travel. You will begin in Boralus, go to Storm Peaks in Northrend for the Temple of Storms and the Halls of Invention, then on to Silithus, and back to Storm Peaks to enter Ulduar. You will finish the quest line back at the Temple of Storms. Oh, and before I forget, you battle three progressively difficult waves of mobs in the Halls of Invention. They will appear out of portals while Mimron is attempting to locate Hati's essence. You can take them down pretty fast. No problems to worry about there.
Enjoy your six versions of Hati. It's only cosmetic, unfortunately. His abilities do not change from one version to the other. You can collect all six and put each in your stable (which is conveniently provided for you next to Thorim's throne via a clockwork gnome) or you can carry five different aspects on your person that you can choose according to your own preference. Hati is also a full pet now. You can control him and he has Spirit Beast abilities. Your faithful companion is once again fighting by your side!
I hope this little synopsis is helpful. Happy hunting!
Ok so where in Storm Peaks am I supposed to go? There's NOTHING on my map and no information anywhere.
Found it at Temple of Storms kind of.
Now where in Silithus do I go?
For the Alliance, this quest starts at the Image of Mimiron in Tradewinds Market in Boralus.
For those without coordinates, he is on the left side of the inn at Boralus.
i almost cried when the cut scene of putting hati's 2 halves back together came up!
worth the watch! don't skip the cut scene!
Retrouvez Mimiron à la Bibliothèque de l'Inventeur, dans les Pics Foudroyés.
<nom>, j'ai de grandes nouvelles ! Une récente signature énergétique a fait se déclencher les relais de détection que j'avais installés à la suite du regrettable incident avec Sargeras. Il me faut davantage de données pour en être sûr, mais une première analyse suggère que ces énergies émanent de Hati ! Nous pourrions peut-être encore le sauver ! L'esprit de Hati étant toujours lié au vôtre, je vais avoir besoin de votre aide. Retrouvez-moi immédiatement dans ma bibliothèque des pics Foudroyés !
Notre équipe scientifique ne serait tout simplement pas complète sans Barbe-de-Bronze, ici présent.