Talk:WN/Azathoth/@comment-26144500-20170325074704/@comment-10330822-20190608193027

Understand, identifying, analyzing, and countering are different things.

The Ultimate Skills cannot be duplicated. That's just a fact. The World System does not allow for Ultimate Skills to exist in duplicates in the world. It was something about Ultimate Skills existing in the ill duplicate part of the soul, that's how Yuuki explained them. So Rimuru couldn't duplicate Abyss God, nor really analyze it either. Because when it comes to Manas: Ciel, anything that is fully analyzed is copied, and its never been stated that Rimuru can analyze something "and not" copy it. This is also why Abyss God can't perfectly duplicate Ultimate Skills, as it would contradict the law against duplication. So its highly likely Rimuru "can't" analyze Abyss God, even though he has the tools to do so.

Realistically, Rimuru could fight Guy, kill him/eat him, and then analyze and duplicate Abyss God, that's how that would work. But Rimuru can't fully analyze and counter Abyss God while the later is still alive. He could, also realitistically, steal the ability with Greedy King Mammon though, and Guy might survive that. But it doesn't change the rule that both can't have the skill.

That being said, nothing is stopping him from duplicating Abyss God's original form, Pride, since Pride was only a Unique Skill, which can exist in duplicates.

Back to the point, Rimuru can't copy things like Slothful King Belphagor or Lustful King Asmodeus because their users skill live. But he could copy something like Creation Lord Ahura Mazda or Dominion Lord Melchizedek, because their users are gone from the world, hell, since Milim destroyed Manas: Lucia, Justice King Michael is up for graps as well.