Tarys

Tarys was a proto-dragon of blue-white coloration and an old friend of Malygos. When the two of them were young, Tarys and Malygos would often hunt and learn together. Alexstrasza and Ysera would later discover the corpse of Tarys and another proto-dragon, along with a living but terrified purple proto-dragon, and alerted Malygos. One of the corpses, which may or may not have been Tarys, came to life and attacked before Malygos tore off its head. The other one was torn apart by Alexstrasza and Ysera before it, too, became undead.