Talk:Rimuru Tempest/@comment-43304080-20190728031435/@comment-10330822-20190728065145

World System ranks his EP at B~A-Class upon his arrival in the other world. That is listed in the first few chapters of the Web Novel.

He becames definitely A-Class are the time he fought Ifrit, because High-Tier Spirits are about A-Class, and Rimuru was at least A-Class when he fought the A-Class Orc Disaster.

After which, he became A+-Class, because his EP is stated to be 1/10 of the EP of Milim whose "relaxed state" EP is 2,000,000+ meaning Rimuru's EP was around 200-250k, which is A+-Class.

He became S-Class when he becomes a True Demon Lord, as Raphael states his EP increased x10 what it was before. Which means his EP matches other S-Class.

His power grows to SS-Class after becoming an Ultimate Slime because his body is composed of the same substance as Veldora who is SS-Class. In addition, Rimuru absorbed vast amounts of nihility and presumably stardust energy, which means he now possesses more EP than even Guy, the True Dragons, or Milim.

Because Rimuru can store and generate almost unlimited energy he is considered "Unrankable" because its impossible to rank someone who has almost unlimited EP.

As for "Insanely Unrankable", that's to denote the difference between Veldanava before and after creation, which is him having unlimited access to stardust and nihility energies. After creation he lost access to the nihilitic energy and was limited to the power of creation.

So, even though both are too large to fully measure, it is without question that a being with nihility and stardust energy is stronger than with just stardust energy.

That is the difference maker. Rimuru absorbs nihility energy using time rifts to the end of time to absorb nihility energy at the point beyond creation, and presumably gathers infinite stardust energy from the Magicule Breeder Reactor. All of which he stores in Imaginary Rooms that can hold infinite amounts of energy.

In short, Rimuru is "Insanely Unrankable".