We do in fact, have a guideline system for this. Although, keep in mind, said page itself does emphasize it is a guideline.
Intelligence is a word that is incredibly difficult to define, as it has been used to refer to many things, such as one's ability to process information, or their capacity for logic, self-awareness, creativity, reasoning, and/or problem solving, or their knowledge and memory. In its fullest...
vsbattles.fandom.com
I think there are 2 rankings most worth considering here:
Extraordinary Genius: Individuals whose knowledge spreads over many fields of science and who vastly surpass the intellects of the smartest humans on Earth. At this level, many are capable of creating futuristic technology, executing complex strategies even under high pressure, and potentially even accurately predicting the future through sheer mental calculations, or outperforming supercomputers. This is where
super scientists of exceptional scientific knowledge begin to appear.
- Examples: Kisuke Urahara and Sosuke Aizen (Bleach), Lelouch vi Britannia (Code Geass), Batman (DC Comics), Bulma, Doctor Gero, and Android 21 (Dragon Ball), Stewie Griffin (Family Guy), Spider-Man, Bruce Banner, and Iron Man (Marvel Comics), Dust of Osiris (Melty Blood), Accelerator (To Aru Majutsu No Index), Ozymandias (Watchmen)
Supergenius: The highest level of non-omniscient intellect, possessed by those individuals with unfathomably superhuman intelligence and usually extensive mastery of most, or all, branches of science. Characters of such a scale tend to be super scientists capable of creating impossibly advanced physics-defying and reality-warping fantasy technology even with just household items, and outsmarting even other extremely intelligent individuals. Supergeniuses can often easily process calculations beyond modern humanity's combined capabilities on their own, and quickly come up with extremely complex plans.
Take note that for a Supergenius rating to be given based on technological prowess, the character in question should be able to essentially warp reality as they wish on a massive scale with their inventions, or even use them to overpower tier 1 entities for higher cases. Simply defying the laws of physics with futuristic technology is very common for Extraordinary Geniuses as well.
- Examples: Professor Paradox (Ben 10), Brainiac (DC Comics), Dexter (Dexter's Laboratory), The Doctor (Doctor Who), Doctor Doom, Mister Fantastic, Thanos, and the High Evolutionary (Marvel Comics), Doctor Doofenshmirtz (Phineas and Ferb), Washu Hakubi (Tenchi Muyo!), Lum (Urusei Yatsura), The Emperor of Mankind (Warhammer 40,000)
"remembers everything from the previous universe" doesn't make clear if it's she remembers all her own experience of those years, all events, all events in a limited set of locations, etc. & though her inventions do sound crazy, I doubt she's higher than Supergenius, since Nigh-Omniscient requires "knowledge of nearly everything, with only minuscule gaps existing in their knowledge.".
Still, she definitely seems eligible for Extraordinary Genius, if not Supergenius rating.
