Lorenzo Richelmy as Marco Polo
Benedict Wong plays the head honcho Kublai Khan
Zhu Zhu plays Kokachin, "the blue princess".
QUEEN JOAN CHEN will grace your screens as the Empress Chabi, the wife of Kublai Khan.
Remy Hii is Prince Jingim - son of Kublai Khan.
Chin Han is Jia Sidao, Song court’s chancellor.
Tom Wu is Hundred Eyes. Dude is blind and trains Marco Polo.
Olivia Cheng plays a royal concubine Mei Lin. Sister to Jia Sidao. She slices folks up while being unnecessarily naked.
Uli Latukefu is Mongolian Warror and Kublai's illegitamate kid, Byamba.
On a related note, Variety has reviewed the first half of the episodes and is fairly merciless: "if somebody yells, “Marco!” nobody should feel compelled to answer right away" and Lorenzo Richelmy is"conventionally handsome, is thinly drawn and a bit charisma-challenged."
SOURCE: Posters, second source