Who is the most vengeful character in 'Game of Thrones'?

In the world of Game of Thrones, revenge is a common motivator for many characters. However, one character stands out as particularly vengeful: Cersei Lannister.

Throughout the series, Cersei is determined to get revenge on those who have wronged her or her family. She is willing to do whatever it takes to achieve her goals, including murder, manipulation, and deception.

Cersei's vengeful nature is most prominently displayed in her actions against the High Sparrow and the Faith Militant. After they imprison her and force her to do a walk of atonement, Cersei plans a devastating attack that kills them all, including the High Sparrow himself. She also seeks revenge against her enemies in the North, using the Lannister army to try and defeat the Starks and their allies.

Other characters in the series, such as Arya Stark and Ellaria Sand, are also known for their vengeful natures. However, Cersei's actions and motivations make her the most vengeful character in the world of Game of Thrones.