Actor Kit Harington will be joining his "Game of Thrones" co-star Richard Madden in star-studded superhero film "The Eternals". Harington, best known for his portrayal of Jon Snow in hugely popular fantasy drama "Game of Thrones", has been roped in to essay role of non-Eternal Dane Whitman.

Marvel Studios President Kevin Feige on Saturday came to the D23 Expo with a surprise treat for all the "Game of Thrones" fans. He announced addition of Harington to the team, resulting in a mini-"Game of Thrones" reunion. Madden, who essayed role of Snow's brother Robb Stark in the HBO series, will bring to life the role of Ikaris in the Marvel movie.