Moro

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

Season 6
He is first introduced sitting with his wives and bloodriders in his tent as Daenerys Targaryen is brought as a gift for him by two Dothraki warriors. Impressed by her obvious beauty, he circles her, opining that seeing a woman naked for the first time is the best thing in the world, however, his blood riders casually disagree, listing other great things, like killing a rival khal and enslaving conquered people. Moro, obviously mildly irritated by their flippancy, declares that seeing a woman naked for the first time is one of the five best things in the world and makes it clear that it's the end of the discussion.

As he is about to rip Daenerys's dress off to see her naked body, she firmly tells him to not touch her in Dothraki, surprising everyone as they were unaware she spoke their language. Daenerys then declares her identity, listing off her many titles. Moro, however, simply laughs in response, stating that he will still bed her and she will give him a son. Daenerys firmly turns him down, declaring that she will not bear him or anyone else children. Intrigued, Moro states that he likes that she has spirit, but his obvious lustful intentions are immediately dashed when she reveals that she is Khal Drogo's widow. Moro humbly apologises for his behaviour, for it is forbidden in Dothraki tradition to bed a Khal's widow. He then cuts her free of her restraints and gives his word that nobody will harm her. He refuses to bring her back to Meereen, however, as the same laws that protect Daenerys from molestation require that she be brought to Vaes Dothrak to join the Dosh Khaleen.

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, he attended the wedding of Khal Drogo and Daenerys Targaryen in Pentos, along with his own son Rhogoro. Moro sometimes allied his khalasar with Drogo's for major raids.

The storyline in which Moro is involved in the show, however, will not appear 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.