THE ETERNALS Casts Kit Harington as The Black Knight & Gemma Chan as Sersi

It seems Kit Harington's watch is eternal.

CBR has word from Disney's D23 Expo in Anaheim, California, where it was announced that actors Kit Harington, Gemma Chan and Barry Keoghan are joining the cast of the upcoming Marvel Cinematic Universe film The Eternals, based on the Marvel Comics characters.  They will play the characters The Black Knight/Dane Whitman, Sersi and Druig, respectively.

The three join Angelina Jolie as Thena, Richard Madden as Ikaris, Kumail Nanjiani as Kingo, Lauren Ridloff as Makkari, Brian Tyree Henry as Phastos, Salma Hayek as Ajak, Lia McHugh as Sprite, and Don Lee as Gilgamesh.  The full roster of the Eternals were presented at D23 along with each character's costume, which can be seen in the picture above.

The Eternals are a fictional species of humanity that resulted from an offshoot of the evolutionary process that created sentient life on Earth.  The original instigators of this process, the alien Celestials, intended the Eternals to be the defenders of Earth, which leads to the inevitability of war against their destructive counterparts, the Deviants.

Harrington, 32, is an English actor best known as Jon Snow on the HBO fantasy series Game of Thrones.  His other films include Pompeii, How to Train Your Dragon 2, How to Train Your Dragon: The Hidden World, Spooks: The Greater Good, Brimstone, and Silent HIll: Revelation.

Created in 1967 by Roy Thomas, John Buscema and George Tuska, the Black Knight first appeared in The Avengers (vol.1) #47 as Dane Whitman, the original Black Knight's descendant and the supervillain Black Knight's nephew.  Whitman inherited the Ebony Blade, a mystical sword that carried a curse, and took the Black Knight name to help restore honor.  The Black Knight has been a member of various incarnations of the Avengers, as well as the Defenders, Ultraforce, Heroes for Hire, and MI: 13.

Chan, 36, is an English actress best known as Astrid in the film Crazy Rich Asians, and as Minn-Erva in the Marvel Cinematic Universe movie Captain Marvel.  Her other films include Mary Queen of Scots, Fantastic Beasts and Where to Find Them, Transformers: The Last Knight, and Jack Ryan: Shadow Recruit.  Her television roles include the Doctor Who special "The Waters of Mars" as Mia Bennett, the Sherlock episode "The Blind Banker", and as Anita/Mia in the series Humans.

Created in 1963 by Jack Kirby, Sersi first appeared in Strange Tales (vol.1) #109 as a fourth generation member of the Eternals, an evolutionary offshoot of the human race.  She is the daughter of the Eternals Helios and Perse, and was probably born in Olympia, Greece, some time after the Great Cataclysm that destroyed the continents of Atlantis and Lemuria, during an extended ice age known as the Hyborean Age.  As a sorceress, Sersi first met Avengers members Captain America and Thor, then later joined the team along with the Black Knight.

The Eternals is scheduled to arrive in theaters on November 6, 2020.