Intelligence will carry a person a long way in Westeros. Some of the most significant players aren’t warriors but masterminds who let others fight for them. Aemond may not be on the same level as Littlefinger or Tyrion Lannister, but he’s by no means an idiot.
As the younger brother, Aemond had little chance of inheriting much power by birthright, so he dedicated himself to self-improvement in ways Aegon never will. He’s a lot like Daemon in that sense, filling the gaps that his brother leaves behind, though he’s driven more by spite than love.
While Aegon was committing adultery and drowning himself in ale, Aemond studied the blade. Among the show’s Targaryens, Aemon is among the most formidable fighters, second only to Daemon. Originally, he was much less confrontational, keeping to himself while hiding his resentment for his brother and nephews. After he lost his eye, he gained a deadly fixation on Rhaenyra’s sons, particularly Lucerys.
Aemond’s missing eye