Pokémon is the biggest multimedia franchise on the planet, with multiple branches in the video game, animated series, movie, trading card game, and comic book worlds. The video games are what kicked off the Pokémon franchise and they have their own canon that is separate from the animated and printed franchises. The Pokémon video games have bizarre lore that is considered to be canon, which is buried away in brief moments that are easily missed.
The Pokémon series has never been afraid to retcon elements that no longer fit with the game world. The most obvious of these are the instances when new types were introduced to the series, like when Dark-type and Steel-type Pokémon appeared in Pokémon Gold and Silver, and when Fairy-type was introduced in Pokémon X and Y. These were integrated into the world with barely a mention as to why they were never around before, with remakes including the new types, even if they weren't in the original games. The way Pokémon evolution stones are used also falls under this category, as they replaced some of the more annoying evolution methods used in older games.
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The Pokémon world might have become more sanitized over time, but there are still weird and dark elements that are part of the series. The Pokémon Company still allows references to humans eating Pokémon, and there are still Pokédex entries that talk about Pokémon eating each other, or killing humans in the wild. There are some pieces of Pokémon lore that are equally as weird, yet they still exist within the games.
There are plenty of Pokémon trainers who unofficially cheat, thanks to quirks in the programming of the games. The Elite Four in Pokémon are known for cheating,
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