https://gamefaqs.gamespot.com/boards/234547-super-smash-bros-ultimate/77243405
I keep on seeing people say that there's Rare Ltd Spirits from Jet Force Gemini and Blast Corps in the game, but this is not true. There are no Rare spirts. HOWEVER, those two games are listed in a separate file related to Spirits.
First of all, here's my pastebin of all the Spirits:
https://pastebin.com/NCi8Af0N
This was pulled from what's called an MSBT file, which is basically where text used in the game is stored. This specific file was from 0x8bf78808.msbt, which is a list of all Spirit names in English.
Now after this file, there's one called 0x8bfac778.msbt, which is a list of many game titles. What these are used for is listing the game of origin for a Spirit.
Here is a list of all game titles that spirits reference: https://pastebin.com/aZxKwGHJ
Some of the titles repeat, cause they're considered a "series" instead of a specific game. Like "The Legend of Zelda" appears twice. So I edited in the path names to show which ones are considered "Series".
As an example, look at this screenshot of a Geno Spirit Battle.
https://imgur.com/m4MzbJt
Notice how it says "Super Mario RPG: Legend of the Seven Stars"? It's pulling from that list I linked.
So now, what we're wondering is why is Jet Force Gemini and Blast Corps still on the list of game titles, if there's no Spirits? Was it a mistake, do to someone not realizing those franchises are third-party now so they were removed? Or was it scrubbing to hide potential DLC updates? A sign of things to come?
Either way, all I know is that I'm very sleepy right now.