Smaug the Golden
Smaug was a dragon in the Third Age. One of the last of its kind, it lay waste to Dale and captured Erebor, the Lonely Mountain, from the Dwarves. For about two hundred years it hoarded Erebor's treasures before a company of dwarves managed to drive him out of hiding, after which the dragon was slain by Bard the Bowman in Lake-town.
Special powers of Smaug:
Level 1:Landing - Smaug will land on floor.
Level 3: Power of Wings
Level 5:Arkenstone - Smaug will gain +50 Damage and +10 Health
Level 10:Dragons from North: Smaug will summon 4 Dragons.
Gameplay Video: Youtube.com