Kevan Lannister has always been a strangely used character. Being the late-Tywin's brother, you'd expect a more to be made about him. He's had that blow to deal with on top of the revelations surrounding his son Lancel and Cersei's affair, so surely he must be gearing up to respond? He rejected Cersei's grab for power and headed for Casterly Rock, but the end of Season 5 saw his return to the capital as Hand Of The King. Kevan won't show any forgiveness to Cersei, nor will he offer any mercy, but he could be a major player in the King's Landing game if he begins to steady the ship and solidify the city.