I just realized that Danny Webb, who played Robert Morse in Alien 3, was also Ser Arlan of Pennytree in the series A Knight of the Seven Kingdoms.

I was watching the last episode of the excellent series, A Knight of the Seven Kingdoms, and realized that Ser Arlan of Pennytree was played by Danny Webb. Alien fans will recognize him as Robert Morse from Alien 3. So now we have two actors from the third Alien movie to be featured in the Game of Thrones universe, Danny Webb and Charles Dance (who played Tywin Lannister).

Ser Arlan of Pennytree

Robert Morse

Tywin Lannister

Jonathan Clemens