The fact that this current zegion is now this powerful all because of Rimuru healing him which was a bug at the time with his own "unlimited slime flesh", oml thats way too cheat, has no one ever thought that if Rimuru decides to heal like 99 more bugs with his flesh he would have had a zegion army going, I mean Ik it would be too op for the plot to make sense and for zegion to be a character for himself but still man all along Rimuru could have created an army if he wanted to, sadly he isnt that aggresive neither is he that smart he only gets help from raph.
zegion is not an ordinary bug either he is a very rare species explained in plot .... his species is a direct counter to demons ....yes rimuru flesh is op but its hard to find zegions species aswell
thats the thing about zegion that irks me. theres no real stakes. its like no matter who is in zegions way, he wouldnt even break a sweat beating them. similar to diablo. i know its tough writing for a character that powerful, but theres no real challenge for them. the only real challenges for them are their allies, and even thats debatable. one can make an argument that he has rimurus dna in him, but so does apito, and she struggles hard against foes that zegion would just one shot.
Thats what makes zegion who he is, his character gave so much hype just like when they were first introducing Diablo, it helps them attract customers to read their manga and such thus the reason why you are here rn, what irritates me is the fact that theres people like you who loves to watch main characters die or go through struggles while they fight someone, like wth are your type of people masocist 0-0, that stupid anime where the mc has black hair, young hero looking generic face, and a sense of chivalry, while also screeming out his lungs about becoming an hokage hero demon king defeater and keeps chatting in his head while fighting, sweating and saying "oh this person is too strong ARGh" thats what you want huh HUH? sigh
Zegion simply had more potential than apito, ciel says that clearly in light novel. You are in the wrong show if you are looking for an underdog story.
Diablo got one-punched by Michael, so it's not like he's invincible. Still Diablo should show off a bit and take out someone big like Jahil or evolved Vega. As for Zegion, we all know he's going to be facing off against Zelinas, the current Insect king. It makes good plot sense to raise up to god-tier to face off against another God tier opponent, who was originally endowed by Veldanava.