Originally Posted by
BlueMoonKiss
Tyrygosa is NOT a relative of Malygos so far in the lore. It's suspected, but there is no proof behind it and Blizzard hasn't said anything concerning her and her possible relations to Malygos.
Malygos' relatives are the following:
Sindragosa - KILLABLE (Icecrown Citadel) - formerly the prime-consort of Malygos, is a mighty frost wyrm who was raised by the Lich King himself at Sindragosa's Fall in Icecrown.
Saragosa - KILLABLE (Coldarra) - a great blue dragon who circles high above the Nexus. She serves both as guardian and consort to Malygos. If any serious threats arise, she alerts her master of the danger.
Arygos - ALIVE (Ahn'Qiraj) - an ancient blue dragon and offspring of Malygos. He can be found in the Temple of Ahn'Qiraj taking the form of a gnome, who incidently has been taken captive by the Qiraji alongside Caelestrasz and Merithra.
Balacgos - DECEASED - was an elder offspring of the great aspect Malygos. As a caretaker of magic, Balacgos created a cerulean cube to deal with the unharnessed latent magic energy found throughout Azeroth, in an effort to keep it out of the hands of undisciplined practitioners of the arcane. The cube was designed to absorb such magic and hold it in reserve till a time the blue dragonflight had need of it. But Balacgos miscalculated and upon activating the cube the device absorbed his magic, leaving the dragon a lifeless husk. The cube came to be known as Balacgos's Bane.
Andorgos - ALIVE ( Temple of Ahn'Qiraj ) - son of Malygos, he appears in-game as a female Gnome. Along with Kandrostrasz and Vethsera, he came to the Temple of Ahn'Qiraj after sensing their enslaved brethren deep inside the Qiraji city. However they are unable to attempt to rescue their flightmembers without also falling prey to same spell which holds Caelestrasz, Arygos, and Merithra as C'thun's slaves. The three wait at the entrance of the temple hoping to find adventurers who will venture into the city to free their brethren, and provide the adventurers with powerful pieces of armor in return for bringing them specific items obtained from defeating C'thun and his minions.