Tyrion Lannister
Tyrion Lannister, one of the most prominent characters in "Game of Thrones," is masterfully portrayed by the incredibly talented Peter Dinklage. However, if we strictly adhere to the book description of Tyrion, Peter Dinklage doesn't precisely fit the bill.
In the books, Tyrion is meant to be in his 20s, not 40, and he is supposed to be blond with one green eye and one black. His facial deformities are also meant to be more pronounced. Despite these disparities, Peter Dinklage's portrayal of Tyrion is so iconic and brilliant that it's nearly impossible to imagine anyone else in the role.