Malvion

(none of this is finished fuck off)

Malvion is one of the oldest remaining Black Dragons alive on Azeroth. He was known by his flight as being one of the most cunning, intelligent and wicked of them all. Due to a birth defect, his scales are ashy in their shade and his pupils are grey. He has a very strategic mind, and tends to create multiple plans at once, depending on the different potential outcomes of each action. He was present for many key events during the history of the dragons, and presumed dead by the former aspects.

War of the Ancients
During the War of the Ancients, Malvion took more of an indirect role within the ongoing conflict. His birth defect made him physically weaker, which forced him to rely on his mind. As such, in his infrequent fights he would use advanced rune magic as well as heavily rely on his control over the earth.

Recent History (shorter tldr until I fill in the details)
Malvion had a large portion of his memory & soul stolen by his envious younger brother - Ridthomian - during the events of Legion. After eventually tracking him down during the time of which the Fourth War was coming to an end, he discovers this, and manages to use his tactical mindset to distract him while he stole the orb that the memories & soul fragments were incased within. After gaining the help of some allies, his memories were returned to him, and he became his old self again.

After the others had left, Malvion returned to Ridthomian, with his memories restored and his full knowledge of magic and mastery of runes at his disposal, Malvion managed to defeat Ridthomian, though spared his life. After this, his body was exhausted due to his old age and defeating his brother had not been an easy task. He landed rather recklessly within the south of Suramar, and was captured in his weakened state by the Kirin Tor.

Malvion was interrogated by the Council of Six, with Kalecgos showing the most concern due to the black wyrm's existence. Despite his memory-stolen self claiming to have been cleansed of his corruption, Malvion had been lying and suppressing the traces of it the entire time in order to keep himself alive. He claimed that the death of N'Zoth meant that he was no longer permanently tainted, and that with help from others, he was freed from it. However, Malvion had already pledged his allegiance to another, more powerful old god whose influence continued even after death - Y'Shaarj. He was shackled in his scaled elven guise, and upon being asked his name, this was his response...

"How long do you believe your weak magic can contain -me-? It is inevitable that once I am freed, I will herald the return of my master, and achieve what the weak Neltharion could not. Enjoy your fleeting peace, for when the Isles return, you will forget the warmth of the sun, as only darkness and ruin will remain. I, am Malvion, Herald of Destruction."