Moro

Moro is a recurring character in the sixth season. He is a Dothraki Khal. Moro is played by Joe Naufahu.

In the books
In the A Song of Ice and Fire novels, Khal Moro has appeared only briefly as of yet, in the first novel. However, the storyline in which Moro is involved in the show will not appear in the books until the sixth book in the series, The Winds of Winter, which has not been released yet, so he could have a larger presence in that book.