Who is Smaug ?
Smaug is a large, red dragon from The Hobbit by J.R.R. Tolkien. He seizes and overtakes a mountain full of treasure, driving out the dwarves and men who live nearby, and remains there until a company of dwarves and a hobbit discover his weakness and he is killed.

What kind of Dragon is Smaug ?
In Tolkien's writings, Smaug is a large, red fire-drake. He has wings that enable him to fly and is capable of breathing fire.

What did Smaug do in ''The Hobbit''?
In The Hobbit, Smaug conquered the dwarves under the Lonely Mountain and kept their treasure for himself. He also terrorized the city of Dale, killing many men and dwarves.

Why Smaug was Evil ?
Smaug's only motivation was his greed. He loved gold more than anything and was incredibly possessive over it.