<P> Tyrion Lannister ( also referred to as `` the Imp '' or `` the Halfman '' ) is a fictional character in A Song of Ice and Fire , a series of fantasy novels by American author George R.R. Martin and its television adaptation Game of Thrones . Based on an idea that came to Martin while writing the 1981 novel Windhaven , Tyrion has been called one of the author 's finest creations and most popular characters by The New York Times . Martin has named the character as his favorite in the series . </P>
what is the imp called in game of thrones
Tyrion Lannister