Chella

Chella is a recurring background character in Game of Thrones. She is played by an unidentified extra and débuts in the eighth episode of the first season. Chella is the leader of the Black Ears clan and is fighting for House Lannister in the War of the Four Kings.

Background
Chella, daughter of Cheyk, is the leader of the Black Ears, one of the hill tribes living in the foothills of the Mountains of the Moon on the western edge of the Vale of Arryn. She is not of remarkable stature, but wears a necklace of ears around her neck, with each ear coming from a slain foe. Her success in battle has seen her rise high amongst the hill tribes.

Season 1
Chella accompanies Shagga, Timett, Tyrion Lannister and Bronn to the Lannister army encampment when Tyrion promises the hill tribes weapons and autonomy from the Eyrie. Tywin Lannister agrees to honor the bargain Tyrion has made with them. The Black Ears take part in the Battle of the Green Fork, helping the Lannister forces win the engagement, and several are seen cutting ears off the fallen foes on the battlefield.

In the books
In the Song of Ice and Fire novels, the Black Ears are noted for their habit of collecting the ears of fallen foes. Chella has forty-six ears on her necklace, and boasts that her sons have nearly fifty between them.