Tyrion Lannister is a fictional setting.
Tyrion Lannister . Martin has named the character as his favorite in the series . Introduced in 1996 's A Game of Thrones , Tyrion is a dwarf and member of House Lannister , one of the wealthiest and most powerful families in the fictional kingdom of Westeros . He subsequently appeared in Martin 's A Clash of Kings ( 1998 ) and A Storm of Swords ( 2000 ) .