Tyrion Lannister is a fictional character from the book series A Song of Ice and Fire by George R.R. Martin and the television adaptation Game of Thrones. He is the youngest son of Tywin Lannister and is known for his sharp wit, intelligence, and strategic mind. Despite being a dwarf, he often uses his intellect to navigate the dangerous political landscape of Westeros. Tyrion serves as the Hand of the King and is involved in various key events throughout the series. His relationships with other characters, such as his sister Cersei Lannister and his brother Jaime Lannister, are complex and often fraught with tension. Tyrion's journey explores themes of power, prejudice, and survival.