Dargonax

Dargonax was a twilight dragon created by Sintharia, who regarded the mighty creature as her child. He appears in the World of Warcraft novel Night of the Dragon.

Biography
Created from a dragon egg infused with the energies of a captured nether dragon, Dargonax rapidly grew into a gargantuan beast nearly equaling the Dragon Aspects themselves in size. His ambition and cunning grew along with his body, and soon he harbored a desire to overthrow his "mother" and conquer the world for himself. He was eventually defeated when the nether dragon Zzeraku sacrificed his life in order to fatally destabilize Dargonax's physical form.

Abilities
Like the earliest twilight dragons created by Sinestra, Dargonax had the power to vampirically drain magical energy from any source. He especially delighted in draining the power from dragons, and indeed this may be the very purpose the twilight dragonflight was created for.

Dargonax also seemed to acquire the powers or attributes of his victims, as when he completely absorbed the powers of the nether dragon Zzeraku, he gained the nether dragon's ability to shift into an ethereal form. This ultimately proved Dargonax's undoing however, as absorbing Zzeraku's energies caused a fatal destabilization of the twilight dragon's already unstable powers. Glowing as brightly as the sun, Dargonax burned away, seriously injuring his mother in death.

Quotes
"I obey no one but myself... I am Dargonax, the Devourer of all, including you..."

"Good... good... and friends, they help friends, yes? Is that right?" (to Kalec)

Trivia

 * "Dargonax" means "devourer" in draconic.