Haggo

Haggo is a recurring background character in the first season. He is played by an unidentified extra and debuts in the series premiere. Haggo is a bloodrider to Khal Drogo.

Background
Haggo is a Dothraki bloodrider in the service of Khal Drogo. He is one of Drogo's closest allies and a stalwart warrior who favors the Arakh. Unlike Cohollo and Qotho, Haggo wears leather armor above his chest.

Season 1
Haggo, alongside Qotho and Cohollo, accompanies Khal Drogo to view his bride, Daenerys Targaryen.

Haggo is present at the feast in which a drunken Viserys threatens Daenerys and her unborn child. He doesn't take part when Drogo orders Qotho and Cohollo to restrain him while Drogo pours molten gold over his head, killing him.

Drogo's wound festers and he becomes seriously ill. He falls from his horse in front of the Khalasar, a sign of great weakness. While Daenerys and then Cohollo kneel to the sides of the khal to check on him, Haggo remains mounted alongside Qotho.

In the books
In the A Song of Ice and Fire novels, Haggo is another of Drogo's bloodriders. During the wedding of Daenerys and Drogo, Haggo gives them a large leather whip with a silver handl. When the three bloodriders attempt to stop the Mirri Maz Duur's blood magic ritual to heal Drogo, Haggo is killed by Rakharo and Jhogo.