[Antoninus]

In the Korean drama Empress Ki,

Yup. There's a whole sequence in that particular drama that involves the deposed king of Koryo fighting as a Mongol slave-warrior against the Turks for control of the Silk Road.

[ThankYouFreeRepublic]

Those two were my favorite characters, especially the young woman who later sacrificed herself for him. I have to admit, I did not finish the last two episodes... because I did not want the story to end.