Undead dragon

Undead dragons are dragons that were reanimated after death. They include zombies, ghosts, and animated skeletons. The Lich King's Scourge contained a great number of them in the form of frost wyrms.
==Types==
* Frost wyrms, raised by necromancy from blue dragons of the blue dragonflight
**Non skeletal Frostbrood Whelpling
*Fiery skeleton dragons
** Emberwyrms, raised by necromancy, usually from red dragons of the red dragonflight
*** Nightbane raised blue dragon in Karazhan, as a mount known as Smoldering Ember Wyrm
** Magmawyrms, raised by necromancy usually from black dragons of the black dragonflight
* Felmyst a fel dragon, a skeleton dragon raised by fel magic
* Bone Drakes and undead versions of Nythendra and Daumyr
* Shadowlands green undead dragons and Ravnyr
*Bloodbrood Whelpling
*Vilebrood Whelpling
*Deathlord's Vilebrood Vanquisher
* Not-living proto-dragons, raised by Galakrond 
* Undead black dragons
==Notable==
Name	Role 	Type 	Flight 	Condition
 	Frost wyrm who the Cult of the Damned plans to use to attack the Argent Tournament Grounds. 	Frost wyrm	Unknown	
 	Formerly known as Madrigosa. Killed by Brutallus in the Dead Scar, then reanimated by his demonic blood. 	Fel dragon	Blue 	
 	Frost wyrm found at the Fleshwerks in Icecrown. 	Frost wyrm	Unknown	
 	Frost wyrm stationed at Gjalerbron who is to be used on attacks against Westguard Keep and Camp Winterhoof. 	Frost wyrm	Unknown	
 	Frost wyrm found at The Avalanche in Sholazar Basin. 	Frost wyrm	Unknown	
 	Frost wyrm found the the Dragonblight who is the keeper of Thel'zan the Duskbringer's Phylactery. 	Frost wyrm	Unknown	
 	Formerly known as Arcanagos. Agent who confronted the guardian Medivh at Karazhan, and was burned from within, remains littering the area. 	??? 	Blue 	
 	Frost wyrm who serves as mount to the death knight Stefan Vadu. 	Frost wyrm	Unknown	
 	Frost wyrm who serves as mount to Scourgelord Tyrannus in the Pit of Saron. Later found in the Frostwing Halls. 	Frost wyrm	Unknown	
 	Ancient servant of Malygos. Lair invaded by Arthas who slew and raised him as a Frost wyrm. Serves Kel'thuzad, guarding his inner sanctum in Naxxramas. Summoned by Kel'Thuzad in Maldraxxus.	Frost wyrm	Blue 	
 	Frost wyrm known as the "Scourge of the North". Hunted down by the Horde scout Rokhan in the Dragonblight. 	Frost wyrm	Unknown	
 	The Frost Queen, first of the Frostbrood. Former prime consort of Malygos. Perished in the War of the Ancients, and remains were once found in Icecrown. 	Frost wyrm	Blue 	
 	Frost wyrm found in the Frostwing Halls 	Frost wyrm	Unknown	
 	Cursed skeletal dragon flying high over the Bone Wastes in Terokkar Forest. 	??? 	Unknown	
 	 	Ghost 	Black 	
 	Razormaw was a former lieutenant of Deathwing. After his defeat, Razormaw's hatred was so great that even in death he still remains. 	Ghost 	Black 	
 	After her death, Sinestra is now a ravaged husk of her former self, pieced together and reanimated by the powers of Deathwing's Old God master. 	??? 	Black 	
 	After his death in Blackwing Lair, Nefarian was reanimated and charged by Deathwing to continue his insidious endeavors. 	Zombie 	Black 	
 	After being slain and beheaded by Varian Wrynn, she was reanimated by her brother Nefarian as an electrical undead monstrosity. 	Zombie 	Black 	
==As a mount==