What do the US Presidential election and the world of Game of Thrones have in common? 

Well, for starters, a very big wall.

A video that features Presidential candidate Donald Trump's face superimposed on characters in the hit HBO show has gone viral, with Trump trading barbs in iconic scenes.

A highlight is when Trump promises to build a wall (a reference to his proposal to build a giant wall on the Mexican border) while standing atop the icy wall at the Northern end of the Seven Kingdoms.