AceShowbiz - "Westworld" has been adding more recurring stars for its upcoming second season. Five actors, with one veteran among them, are set to join the cast of the HBO sci-fi series.

Tao Okamoto, who played Lex Luthor's assistant in "Batman v Superman: Dawn of Justice", is tapped to play a character called Hanaryo. "Lost in Space" star Kiki Sukezane, meanwhile, has been cast as Sakura. Although it's known that the sophomore season of "Westworld" will be introducing Shogun World, it remains to be seen if these two characters have something to do with it.

In addition to Okamoto and Sukezane, "Westworld" adds Zahn McClarnon ("The Son"), Julia Jones ("Wind River") and Martin Sensmeir ("The Magnificent Seven") in recurring capacity. McClarnon is set to portray Akecheta, who briefly appeared in season 2 trailer. He was seen riding a horse, making fans speculate that he's part of the Ghost Nation.

Jones' character is Kohana. As for Sensmeir, he is returning as Native American warrior Wanahton after briefly playing the character in the first season.

The casting news arrives after series creators Jonathan Nolan and Lisa Joy trolled fans with a fake spoiler video. The creators previously offered to spoil the entire season 2 to fight unofficial spoilers that may spread ahead of the season premiere. After a thousand fans upvoted their Reddit post, they did upload a video that opened with, "FULL SPOILERS for Westworld second season. Proceed with caution," written across the screen.

While the video appeared to be convincing at first, toward the end of it, the scene turned to black to reveal a message from Nolan and Joy. "Dear Reddit, From all of us here at Westworld, thank you for watching. We hope you enjoy season two…," it read.

Starring Evan Rachel Wood, Thandie Newton, Anthony Hopkins, Ed Harris and James Marsden, "Westworld" season 2 premieres on April 22 on HBO.