Gregor Clegane AKA 'The Mountain' is arguably the most fearsome warrior in all of Westeros.
Especially since he went down at the hands of Prince Oberyn Martell and seems to have been resurrected as a Frankenstein like warrior named Robert Strong.
Yeah, he doesn't haunt our nightmares at all....
With all of the intense standing, the cutting horses in half and of course the crushing a man's skull with a bear hands thing, it's easy to forget that behind it all is a lovely young chap from Iceland named Hafthór Júlíus Björnsson or Thor as he likes to be called.
When he's not laying down the law in King's Landing, Thor spends the majority of his time training for his successful strongman career. In his down time though, he just likes hanging out with pals like this puppy.
He even captioned it 'friends'. What a softie!
On a side note, that 'puppy' which looks like a full grown dog hasn't grown into it's paws yet. So when it fully comes of age even Thor might struggle to cradle his canine companion.