He's set to play Jon Snow for a final time in Game of Thrones' forthcoming eighth series and Kit Harington insists he hasn't teased his wife Rose Leslie with any spoilers about the final season, after she left the show as his on-screen love interest Ygritte in 2014, the Daily Mail reported.
During an interview at Esquire Townhouse on Saturday, the screen star, 34, also addressed Batman rumours as he admitted it would be 'awesome' to play the role of the superhero, amid reports bosses are finding a replacement for Ben Affleck.
The newlywed, who tied the knot to Rose, 31, in June, admitted he hasn't lifted the lid on details about the HBO favourite, as he likes 'walking around knowing no one knows.'
He said: 'I chose not to tell [Rose]...for this I was like I’m not telling anyone. I don’t think she’s guessed it right yet.'
Downton Abbey star Rose played Ygritte - the love interest of Kit's character Jon Snow - from 2012 till 2014.
While many loyal fans have expressed their sadness about the show ending next year, the Pompeii actor insisted it 'ended at the right time'.
'I have no desire to go back and do any more of that show... I have such a fond place I my heart for that show. For a good month afterwards I just burst into tears randomly. I can’t think of a better job to have in your 20s then to play Jon Snow', he elaborated.
The star also touched on the fantasy series' worldwide fame and detailed an encounter with an unlikely fan: 'I was at Wimbledon once and I was sat at the Royal table and Camilla Parker Bowles turned to me and said "so are you dead?"'
Meanwhile, it was reported that Kit was eyed up by DC bosses about taking over the role of Batman from actor Ben, following his recent stint as the superhero in Justice League.
Addressing the rumours, he said: 'It would be awesome to play Batman. I love the director who’s doing the next ones as well.'
Boasting appearances from Mahershala Ali and Christian Louboutin, the Esquire Townhouse event with Breitling ran from 11-14 October with a curation of interviews, live talks and masterclasses.
In September, Kit thanked Game of Thrones for his 'future family' after meeting his wife Rose on the show.
Asked how the show had changed his life, he told BANG: 'I met my wife on the show, so in that way hopefully it gave me my future family and my life here on in, that's the main thing it did for me, you know, it's changed it completely.
'The last 10 years, you could not ask for a better job to have in your 20s than to be an actor in Game of Thrones, it's been the most amazing thing so it's changed it completely.'