Deryl as a monster was dangerous shit
Even as a monster, he was intelligent, even more than he is now, a greater understanding to be exact, when it comes to monsters and how to use them to get stronger, everything he did, all his preparations and even his evolution - I'm not sure, so sorry if I'm wrong - were planned so that he could get stronger, as a superhuman, he needs time, his skills are not specifically for combat, but I don't doubt that in a short time, he will become one of the strongest and most dangerous superhumans.
(Ps: I know, sorry for the text, I just wanted to talk a bit)