The eldest son of the Lannister family, “Oathbreaker” and “Kingslayer” were wronged by the world. He was originally in cahoots with Cersei and slowly discovered his kind side.
Unlike others, he cares and loves his younger brother Tyrion, and his only thought is to grow his family.
But watching Cersei move towards madness step by step, it seems that he is going to become the “killer” and "Oathbreaker" again.