Next character is Caitlyn, that makes half the roster P&Z (with only Cait being from Piltover, and that's generously assuming because Arcane Caitlyn is Piltovan in name only). I hope 2xkuso tourists are enjoying "Arcane Fighters featuring some dudes from League". Make sure to pump 100$ into those 3 skins! It's F2P!!
People assume the "traitor" in Darius's voice line is Riven, but the word is used broadly here, and a deserter is not necessarily a traitor, Riven is not actively fighting against Noxus. So, I'll go ahead and assume the traitor is Mel.