House of the Dragon season 3 has introduced a stack of new characters, including Ser Gwayne Hightower, and although he may be Team Green, fans think he is secretly a good guy and would have sided with Dunk in A Knight of the Seven Kingdoms.
Now, Gwayne, played by Freddie Fox, actually made his House of the Dragon debut in season 2 as Alicent's arrogant brother and Otto Hightower's son. But so far in season 3, it seems as though he isn't that bad. A number of times now he has pulled up Ser Criston on his bizarre choices. This change of heart has led many fans to believe that if Gwayne were in A Knight of the Seven Kingdoms, he would have done the right thing and sided with Ser Duncan in the Trial of the Seven, just like Baelor Targaryen did.