One of the nagging issues, though, is WHAT was Myron’s deal, and what did he do that was so bad that Rajaat killed him for it. Especially considering that Myron was with Rajaat longer than any of the other champions. The “answer” in RaF was simply that he’d become addicted to killing Trolls (as Hamanu feared he himself would become, thereafter foreswearing use of the “fire eyes” ability or whatever), and starting herding/farming them for his personal use, thereby pissing off Rajaat. And that just doesn’t sit right with me.
Other takes are basically just “he had a crisis of conscience” or "he discovered Rajaat’s true plans.
Per the “Hamanu is TEH SPECIAL!!1!!” line of thinking, Hamanu was set up to be Rajaat’s final solution. He would ultimately turn into the final dragon and kill off the other champions and humans as the final act before Rajaat’s new rebirth. But surely Rajaat would have put a final solution into play before then. Maybe Myron was “special” in the same way Hamanu ultimately was, and whatever he did not only displeased Rajaat, but also threatened him, too.
If we take RaF seriously (which I, for one, do. At least as a whole, and embracing the unreliability of Hamanu as narrator), then Rajaat IS ultimately stopped for good. By Hamanu. Rajaat went and made a creature that had the potential to defeat even himself. If Hamanu was made of the same stuff as Myron, then maybe Myron also had the potential to be a legitimate threat to Rajaat.