Hurley, best known for her role in "Austin Powers: International Man of Mystery", plays Queen Helena on the show. Maskall, meanwhile, portrays the character of King Cyrus on the drama-series.
"King Cyrus has a phenomenal part. If you like 'bad', and I love 'bad', his part is fantastic. I mean, he's the meanest king you could ever find," Hurley said in a statement.
The 50-year-old actress stars as Queen Helena, a fictional contemporary queen consort of England, along with William Moseley and Alexandra Park as her twin children and Maskall as Helena's brother-in-law and nemesis, the new King Cyrus.
"His (Mosely) part is great. He is like the moral compass of the piece. He's true, he's loyal, he says it as it is, he's somebody who the people really like and who could ultimately be a fantastic king."
"The Royals" currently airs on Colors Infinity.