Generations of Emperors
In Grivexia, aside from the sub-levels of the Immortal Emperor Realm, there was also a realm called 'Generations of Emperors'. It was divided into three generations respectively, and those were First-Generation, Second-Generation, and Third-Generation Immortal Emperors.
Third-Generation Immortal Emperors were those cultivators who just had a breakthrough. Although they were the weakest of all the Immortal Emperors, it did not mean that they were pushovers as they just reached the said realm. In fact, there were times that a Third-Generation Immortal Emperor had defeated a Second-Generation one. But of course, it was rare for this to happen.