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2 votes
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I've read here that NPC trainers' Pokemon do have natures (from Gen III onward) and IV's, and I've seen it mentioned in a few places that at least the Elite Four's Pokemon have EV's as well, but I've found no exact or even, seemingly, certain information on the subject. Basically, are NPC trainers' Pokemon's natures, IV's, and EV's randomly generated, or, if they aren't, what are they? I'm most interested in information pertaining to Emerald, but any such information pertaining to any of the other games would also be very much appreciated.
Also, please cite your sources (or l33t hax0r credentials as the case may be).

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I remember reading in an answer to a different question that Gym Leaders are 20 or 25 across the board I think.  E4 is higher.  Don't know how much.  I would also assume that certain prominent NPCs also get Pokemon with specific Natures, IVs, and maybe even EVs, but I don't know about that.
The IVs and natures are set, but they're probably set at random.

3 Answers

0 votes

The IVs and Natures are randomly determined, and the only EV trained Pokemon are the Elite 4 and the Pokémon in the PWT in Black/White 2.

Cynthia's Garchomp, however, has perfect 31/31/31/31/31/31 IVs in Platinum. So... Yeah.

Source: Experience and Bulbapedia

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How could you know this about hidden in-game mechanics through mere experience? It'd help to reference the Bulbapedia article that contains this information, because as it stands this answer doesn't sound very credible.
I used a cheat to capture other trainers Pokémon and then used Showdown! and Serebii to determine the IVs and Nature. Hidden Power dude helped me a lot!
Cynthia's bullsh*t 6iv Garchomp wtf I want a 6iv garchomp

Does it have EVs too?
252 EVs in accuracy, crit chance, and flinch, but only when using Dragon Rush at the worst possible moment for you.
Also 510 EVs in hax.
According to Speedrun.com, many other trainers' Pokemon in BW, including some Team Plasma members, have EVs. Cynthia's Pokemon have 30 IVs in every stat.
0 votes

In 7th generation at least, (I imagine this is retained in Sword and Shield) some Trainer classes do EV train their Pokemon. I know this because I was battling a Veteran with a level 36 Gabite. My Leafeon had 86 speed. Even with a Speed boosting nature and perfect IVs Gabite would top at only 82 speed and yet it outsped me. It makes sense veterans would EV train their Pokemon but I don't know to the extent how much this applies to other trainer classes.

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0 votes

This spreadsheet and this other spreadsheet should have exact levels, natures, and stats for every trainer in Emerald. They unfortunately do not have exact IVs and EVs, so I guess you can try putting them in this damage calculator to estimate their IVs and EVs.
source

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