A dark horse on the “Game of Thrones” cast will re-emerge in Season 7 and he’s going to turn the Seven Kingdoms on their head — with a little help from Cersei Lannister (Lena Headey), of course.

Pilou Asbæk, who plays Euron Greyoy, the vengeful uncle of Yara (Gemma Whelan) and Theon Greyjoy (Alfie Allen), will have a big impact on Season 7. The actor has not appeared in the show much, but will apparently play a far larger role in the upcoming season. Fans will recall that the Greyjoy heirs are currently aboard a ship headed toward Westeros with Daenerys (Emilia Clarke) and her army. A new report from Watchers on the Wall suggests their journey was far from smooth sailing. In fact, much of filming for Season 7 has centered around a battle they find themselves at the center of on the high seas. The attack appears to have been launched by Euron, who may capture one of the two Greyjoy children in Season 7.

The spoiler group also reports that Euron will team up with Cersei, who took the Iron Throne in the Season 6 finale. The site suggests that forming an alliance with the reigning queen is the most logical move for Euron, who will likely struggle to woo Daenerys. Recall in Season 6, episode 10 — titled “Winds of Winter” — that it was revealed to the Mother of Dragons that Euron planned to flash his good looks and fleet of ships at her in an attempt to win a title and her heart.

Euron may have major competition in his quest to tie the knot with Daenerys. Michiel Huisman, who plays Daario Naharis on the show, teased the possibility of a rekindled romance between he and his Khaleesi during an interview with Entertainment Tonight. While she made the difficult decision to leave him behind in Season 6, Huisman suggested that it is possible that the two will reunite. Daario has not been quiet about the fact that he’s madly in love with Daenerys. She, however, has been far more coy. Huisman would not flat out reveal his plans to get back by her side, but said that he is ready for whatever comes his way on “Game of Thrones” and fans should be too.

“Being part of ‘Game of Thrones,’ you’re always expecting your character to die,” he said. “You’re not mentally preparing yourself for a very long haul.”

There has been no shortage of buzz about Euron’s role in Season 7. The Season 6 finale left a lot of questions unanswered. Couple that with some speculation based on George R.R. Martin’s “A Song of Ice and Fire” and you’ve got a recipe for rampant speculation. As was previously reported a number of scenes in Season 6 were set up to prepare fans for Euron’s return, though after that finale it’s clear that there’s no bracing for what he may do with Cersei in his corner.

Euron previously mentioned a number of times that he intended to marry Daenerys and he’s got the tools to do so. In the books, Euron holds in his possession the Dragonbinder — a horn that can be used to become the master of dragons. He has also been vocal about his desire to marry Daenerys, telling his ironborn subjects of his plans on more than one occasion. The Poor Quentyn Tumblr speculates that it is Sam, not Euron, who has the horn in “Game of Thrones,” but warns that fans should not rule out the idea of him obtaining it. It’s quite possible he could attack Oldtown and take it for himself. Another major teaser from Season 6 occurred as the show neared a close. Jon Snow (Kit Harrington) reveals that it is not so much White Walkers he’s worried about, but rather other enemies. He references a “storm” in a speech about the “true” threat, which is something Euron has been known to call himself.

While he has been selected to take on a major role in Season 7, Euron has been an on-again, off-again character on “Game of Thrones” since his introduction. He appeared in just two episodes of Season 6 — “Home” and “The Door” — but was mentioned in several more.

“Game of Thrones” returns in summer 2017. The show will be just seven episodes long and will star a whole host of new characters. Whose storyline are you most looking forward to?

Euron Greyjoy Euron Greyjoy (Pilou Asbæk) is set to make a big splash in Season 7 of “Game of Thrones” at the expense of his niece and nephew Yara (Gemma Whelan) and Theon (Alfie Allen). Photo: HBO