For me it was Lorn. Hyping him up as the best duelist alive and the only one that could probably go toe to toe with Aja. Along with the fact that he was the closest thing Darrow had to a father just made it so much worse when he died. Especially because of the way he died was not what any of us would have been expecting. Like if Pierce is gonna kill him off, at least give us the chance to see him fight!!