Winter is Coming - Game of Thrones Season 2 Teaser Trailer

Who is that guy talking? Robert Bratheon's brother that we never saw in Season 1?

Yep, that sounds like Stannis talking.

"My brother left no true born heirs
By right, and birth, and blood I do on this lay lay claim to the Iron Throne of Westeros
Let all true men declare their loyalty
The Iron Throne is mine by right
They will bend the knee, or I will destroy them
The cold winds are rising"

He's coming for the throne! Can't wait to see how the new characters look, like Lady Melisandre.

cant wait to see the kang of da nawf smash that lil ? joffrey and get revenge for my ? ned