Grey Wind

"I heard his wolf killed a dozen men and as many horses."

- Leo Lefford

Grey Wind is one of six direwolf cubs found by the children of House Stark. Grey Wind is adopted and raised by Robb Stark.

Season 1
When Tyrion Lannister appears before Robb Stark at Winterfell to present him with plans for a custom saddle which will allow the crippled Bran Stark to ride a horse, Grey Wind is under the table at Robb's feet glaring at Tyrion.

Lord Greatjon Umber draws his sword when Robb refuses to give him command of the Northern army's vanguard, a tantamount to a threat. Grey Wind jumps over the table. He latches on to Umber and bites off two of his fingers.

Lord Leo Lefford reports that during the Battle of the Whispering Wood, Grey Wind killed a dozen men and as many horses.

Season 2
When Robb approaches his hostage Jaime Lannister at camp, Grey Wind slowly emerges. Grey Wind has grown larger and stands protectively next to Robb, who caresses his back. After Robb leaves, Grey Wind inches closer to Jaime and taunts him with a snap, before leaving to rejoin his master.

Grey Wind plays a decisive role in the Battle of Oxcross. The direwolf sneaks into the Lannisters' camp and frightens their horses, as well as killing several sentries. Without their horses the Lannister army is easily slaughtered as they are roused from sleep by Stark cavalry. Such an impression is made on Lannister forces that terrified rumors spread in King's Landing that Robb attacked the Lannister camp using an entire army of wolves.

Season 3
Grey Wind travels along with the Stark host as it moves from Harrenhal to Riverrun.

In the books
In the A Song of Ice and Fire novels Grey Wind is arguably the most disciplined of the six cubs; he follows Robb's commands almost to the letter, mirroring how Robb is arguably Ned's most understanding and disciplined child, very much his father's son. It is stated that he received his name because Robb felt that he ran so fast that he seemed like just a blur, a "grey wind" moving over the fields. He is colored smokey grey, with yellow eyes.