7 Things A Song Of Ice And Fire Did Better Than Game Of Thrones
6. Euron Greyjoy
Show Euron Greyjoy feels like a frat boy with a pirate ship. Despite wanting to be king (and sleep with Cersei), he takes nothing seriously. It carries over to his fight scenes too. Even as he defeats his battle hardened niece Yara or shoots a grown dragon from the sky, he diminishes his own gravitas by laughing about it and making sex jokes.
Contrast this version of Euron to his counterpart from the books. The younger brother of Balon Greyjoy has sailed all across the world on his ship The Silence, named because he cuts out his crews' tongues. They pillage every town they comes across, with Euron being the only one able to tell the tale.
He's horrifying, exactly the kind of villain the show could have used in place of its interpretation of the character. When book Euron says to his brother Aeron, "From Ib to Asshai, when men see my sails, they pray," we understand why.