Actress Lena Headey, from the HBO drama series "Game of Thrones,"
Actress Lena Headey, from the HBO drama series "Game of Thrones," arrives at the 66th Primetime Emmy Awards in Los Angeles, California August 25, 2014. REUTERS/Lucy Nicholson Reuters/Lucy Nicholson

Filming is ongoing for "Game of Thrones" Season 5 in Croatia. The country is currently grappling with floods after heavy rains were reported from Wednesday. The floods are not reported to have affected the filming of the TV show. [Spoiler Alert]

Gregor Clegane, also known as The Mountain, may be making an appearance in "Game of Thrones" Season 5. Hafthor Bjornsson was reportedly seen in Belfast, a city where filming takes place for the TV show. According to a report by WatchersOnTheWall, the actor was there in the city for a few days.

It is still unclear if the producers will choose to show the character in the upcoming season. The character's future in the books written by George R. R. Martin is also uncertain. Gregor Clegane was struck by a poisoned spear in a duel with Oberyn Martell in the previous season of "Game of Thrones."

In the book "A Dance with Dragons" the Lannisters sent a severed head of "Gregor Clegane" to Dorne to placate their anger. Some people in the country however suspect whether the head really belongs to The Mountain.

Meanwhile a very suspicious knight has entered the service of Cersei Lannister. The warrior never removes his helmet and is as tall as Gregor Clegane. The character also never speaks because of a vow of silence he is said to have taken. Could this be The Mountain in his new avatar?

The new champion of Cersei is set to make his appearance when the queen is shamed publicly for her sins by the High Septon of the Faith of the Seven. The scene involves her shaving her head and stripping naked before walking from the Great Sept of Baelor to the Red Keep. The new champion will protect the queen and take her inside the castle after her atonement.

The new champion is introduced as Ser Robert Strong by Qyburn. The character will wear the white cloak and join the Kingsguard. Readers who have watched the previous season of "Game of Thrones" will remember Qyburn offering to save Gregor Clegane using unorthodox methods that could "change him" but retain his strength.

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