You can get anything in RandBats, bar a few things
Random Battles don’t have a specific format, you can get any Pokémon ranging from Zacian-Crowned (AG) to Corsola-Galar (NFE).
But the highest format from which you can get Pokémon depends from Gen to Gen. In USUM and ORAS Rands, you can’t get a Rayquaza with Dragon Ascent (Source: Check the move pool of a Pokémon through the Calc), so you can’t get any AG Pokémon in those Gens. About Galar Rands, you can get both the currently AG Mons, Zacian and Zacian-Crowned.
Even Baton Pass is banned in USUM/ORAS and Galarian Rands, so the highest format isn’t completely AG.
I'm pretty sure it's random ubers. Don't have a source for that tho
commented 5 hours ago by GmaxWaluigi
edited 53 minutes ago by GmaxWaluigi
This is factually true, except for Galar Rands where you can get both the Zacian’s.
Random battle format is generally nothing if format is not mentioned. Standard sets of all mons which are viable (from all tiers) and some NFEs are prepared. So it is literally Gen 8 AG with all mons viable with some restrictions.
Basically if the mons are from ubers, their levels would be 64-69 or so (I am not sure). Their levels are based on what tier they are in.
As I said b4, sets are standardised. By Smogon? idk.
commented 13 hours ago by ~TastyMushroom~ ):<
edited 13 hours ago by ~TastyMushroom~ ):<
This is also partially true. The sets are not ‘prepared’, their viable moves are coded and you’ll get four random moves from that code. For example, if you have two or fewer attacks, you get either Leftovers or Black Sludge, four attack’s usually give a Choice- item, and so on. The four moves aren’t prepared, it’s random!
Source
Hope it helps!