He has since appeared as himself in other projects such as the 2019 musical comedy Yesterday.
In a separate interview during Dax Shepherd's podcast Armchair Expert, Sheeran explained Game of Thrones creators David Benioff and DB Weiss asked him to appear on the iconic HBO fantasy series as a surprise for his friend, UK actress Maisie Williams (who played Arya Stark).
Unfortunately, the surprise was spoilt by fellow Game of Thrones star Sophie Turner who accidentally told Williams beforehand.
Sheeran also let slip the suggestion that writers intended to kill off Williams and the seventh season was supposed to be her last. Viewers will know that didn't eventuate as Arya was the hero of the eighth and final season after killing the Night King.
"[Maisie has] always been awesome," Sheeran added. "I don't think they had written the ending yet. It was meant to be her last season but it wasn't. And as a surprise for her, [they got] me on. So, she was meant to turn up on set, and I was by the fire."
The Shivers singer played a Lannister soldier in the Season 7 premiere episode, titled "Dragonstone".
"[Filming the scene] was great," Sheeran said on Armchair Expert. "I feel like people's reactions to it sort of muddied my joy to it."