I think that is an Aldrachi. Could be the reason why vengeance demon hunters resemble them so closely when utilizing metamorphosis.
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Because there is absolutely no one from the Horde's leadership that even remotely did anything useful during this expansion.
The blood elves did all the work for the Horde during this expansion and if anything, a trio of Lliadrin, Aethas and Halduron should be more present as they deserved it.