He’s a dwarf. Some call him ‘The Imp.’
One of his greatest accomplishments, in his own opinion, was to be born a Lannister.  Son of Tywin Lannister, brother to Lord Jaime Lannister and to Cersei Baratheon (née Lannister), the Queen Regent, uncle to young King Joffrey Baratheon. In addition to being powerful, the Lannisters are rich beyond the dreams of avarice. A common simile in the fictional, fantasy world of Game of Thrones is, “Rich as a Lannister!” Another, more common phrase is, “A Lannister always pays his debts.”
Drunkard. Whoremonger. Snide. Devious. Condescending. By his own admission, dishonourable. And yet, he is one of the most honourable dishonourable men you will ever meet. Despite his open debauchery (he is most often seen drinking wine and cavorting with prostitutes – often at the same time), he is one of the most moral ‘bad’ people in Game of Thrones.
He uses sex and alcohol as a kind of armour or shield. And perhaps it is more like a disguise, as well. It not only hides the ‘real’ person inside but also protects him. He is a complex, multi-layered character. And the last thing he is – is boring. Never a dull moment when The Imp is around, I can promise you that.
Most of all, Tyrion Lannister is just plain fun. He is a joy to watch. Peter Dinklage turns in one brilliant performance after another. If for no other reason, seeing him portray Tyrion is, in and of itself, reason enough to watch Game of Thrones.
Game of Thrones can be seen Sunday evenings on HBO.