Annihilan

Annihilan, the Ancient Black Wyrm, was an ancient black dragon and a former leader of the Black Dragonflight.

History
Annihilan led the Black Dragonflight into battle against the Red Dragonflight in a conflict known as the War of Red and Black. Another black dragon named Nefarian took control of the Black Dragonflight from Annihilan during this war. Nefarian considered Annihilan a fool for his fixation on conflict with the Red Dragonflight and made sure to purge Blackrock Mountain of everything that was associated with Annihilan's rule there after his downfall.

In 150,083 CMT, Nefarian was reunited with Groularougarn, a red dragon who had also known Annihilan during his life, at the Mad Scientist Convention. When Nefarian informed Groularougarn that he had scrubbed all traces of Annihilan from Blackrock Mountain, Groularougarn sarcastically replied "That is simply a shame". Nefarian then reassured Groularougarn that his goals were very different from what Annihilan had intended for their two races, because while Annihilan was solely fixated on war against the Red Dragonflight, Nefarian's goal was to enhance the entire dragon species via selective breeding and gene splicing.