The second child and eldest son of Lord Tywin Lannister of Casterly Rock and his wife Lady Joanna.
Jaime joined the Kingsguard of Mad King Aerys II Targaryen when he was only fifteen years old. When he betrayed King Aerys during the Usurper's War and killed him under the Iron Throne, the world was shocked.Give him the nickname “Regicide”.
Jaime had a secret physical relationship with his twin sister Cersei for a long time.