Another interview published tonight with Ewan "Aemond" Mitchell, where he makes even more clear that his character tried to kill his brother Aegon:
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But it's more than just victory that Aemond sees within his grasp in this moment. He also sees revenge. Aemond and Criston have secretly planned for Aemond to lie in wait with Vhagar under the cover of the forest to defend the attack on Rook's Rest if needed. It proves to be a wise move when Rhaenys and Meleys descend from the heavens to torch the army. But what none of them expected was that a drunken Aegon would also show up with his dragon, Sunfyre, in a childishly misguided attempt to prove he's in control after his mother, Alicent (Olivia Cooke), admonished him as more puppet than king. It should be two brothers against a common enemy, but Aemond hasn't forgotten the events of last week's episode, when a drunken Aegon (notice a pattern?) humiliated him when he found Aemond in Sylvi's bed.
"Aegon and his crew very much violated Aemond's safe space, and they catch him in the most vulnerable state we will probably ever see Aemond: belly up," Mitchell said. "They humiliate him. In a moment, his code comes into play and that facade comes up. It is the image of someone who does not care what you think of him and sees himself as bulletproof."
He proves as much over Rook's Rest when he directs Vhagar's fiery dragon breath at Rhaenys and Aegon, unbothered by the likelihood he could kill his brother.
"In the Battle of Rook's Rest, you do have to wonder if Aemond always planned to get back at Aegon, or whether or not Aegon was just in the way and he was collateral damage," Mitchell said. "I think that Aemond views the world through a very black-and-white filter. You are either with him or against him, and if you get in the way, that's on you."
The not-so-friendly fire aimed at Aegon and Sunfyre, along with damage done by Meleys, sends the pair plummeting to the ground, and the episode ends without confirming whether either survives. Vhagar, meanwhile, kills Meleys in midair, and Rhaenys is crushed to death when her beloved dragon's body falls into the castle below. It is yet another devastating blow to the cause of Rhaenyra Targaryen (Emma D'Arcy), again delivered by Aemond and Vhagar — making them two for two in dragon battles for the series.
"The first time Aemond uses Vhagar in Episode 10 of Season 1, he lets his emotions get the better of him, and it was ultimately an accident when he kills Luke," Mitchell said. "But he witnessed firsthand what these dragons are capable of. That is in contrast to Aegon, who, in the skies over Rook's Rest, didn't completely understand what he was getting himself into. But Aemond does now, [bold]and it was purely intentional, what he did this time."[/bold]