Gregor Clegane
"Age 35-36. Gregor Clegane is a gigantic man, arguably the largest man in Westeros (surpassing all of the Baratheon brothers, Hodor and his own brother Sandor), with great arms, an ugly voice like stone breaking, grey eyes, brown hair and large shoulders."
Ok they're all interesting but this one just looks like they grabbed some random mugshot of some guy that got arrested at a BBQ...
#2- description says "silver-gold" hair, but that's purple and white
#5- not a horse-face, face looks like a boy (only the hair is supposed to look boyish)
#19- not a pointy beard, and he looks happy
#27- not a pretty smile at all. Those teeth...