Netherwyrm

This article contains information from the Warcraft RPG which is considered non-canon.

Netherwyrms are the larger cousins of the nether dragons. They are winged ethereal creatures. Packs of nether dragons can often be seen flying around a netherwyrm trying to hunt prey, leaving some to believe that the netherwyrm is the mature version of the nether dragon. Netherwyrms are capable of shooting out green fire. Netherwyrms use the same tactics as nether dragons, though they like to evaluate their prey from a distance before moving in.

They appear similar to Mana Wyrms, except for the fact that they have wings.