Which dragon aspect is the main threat in Cataclysm?

Which dragon aspect is the main threat in Cataclysm? Deathwing is the answer. Also known as Neltharion the Earth-Warder, Deathwing is the central villain whose return triggers the expansion’s world-shattering disaster.

Once one of Azeroth’s five Dragon Aspects, Neltharion was corrupted by the Old Gods and became the Destroyer. After hiding in the elemental plane of Deepholm, he bursts back into Azeroth, ripping through the sky and reshaping Kalimdor and the Eastern Kingdoms with earthquakes, floods, and volcanic destruction.

The other named dragons are easy to mix up. Ysera is the green Dragon Aspect, Nozdormu guards the timeways, and Malygos was the blue Aspect. They are important lore figures, but none is Cataclysm’s principal threat. Deathwing’s allies include the Twilight’s Hammer cult and elemental forces pursuing the Hour of Twilight.

The expansion’s climax centers on stopping Deathwing with the Dragon Soul. Heroes recover the artifact through time-traveling events, then use it in the final battle at the Maelstrom, ending the Destroyer’s threat and costing the remaining Aspects their powers.