Jaime Lannister
Jaime is the eldest son of Lady Joanna and Lord Tywin Lannister, Jaime and his older twin sister Cersei were inseparable in their early childhood, even going so far as to experiment together in a sexual manner at a young age. Jaime is a born warrior, and most of his skills lie in the area of martial expertise. With this skill he is also known as The King Slayer for killing Aerys "The Mad King".
Cersei Lannister
Cersei is the only daughter and eldest child of Joanna Lannister and Lord Tywin Lannister, she is also the elder twin of Ser Jaime Lannister and the elder sister of Tyrion Lannister. She was raised in privilege in the family seat of Casterly Rock and she is also known for her great beauty. Just like her father, she blamed her younger brother Tyrion for her mother's death and wished that he never would have been born. However despite this issue, Cersei had often overcame this by developing an incestuous relationship with her twin brother Jamie.
Tywin Lannister
Joffrey Baratheon
Prince Joffrey Baratheon is known to the Seven Kingdoms as the eldest son and heir of King Robert Baratheon and Queen Cersei Lannister, however in all actuality he is the eldest son of the twin siblings, Jamie and Cersei Lannister. Joffrey had ruled the Seven Kingdoms , having claimed the Iron Throne after his father, King Robert Baratheon, died which only made him to be more arrogant, selfish, and cruel.
Prince Tommen Baratheon is known to the Seven Kingdoms as the youngest child of King Robert Baratheon and Queen Cersei Lannister, however in all actuality he is the youngest son of the twin siblings, Jamie and Cersei Lannister. He also has an older brother named Joffrey and an older sister named Myrcella. Compared to his older brother Joffrey, Tommen is rather kind hearted and pure.
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