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3 of the 5 event distributions of Ash's Pikachu have had a naughty nature. The Best Wishes one was brave for some reason and the Alola champion distribution gave him a hardy nature (maybe to symbolize finally getting a league win after all that time), but naughty seems to be his default.
Pikachu would probably have the same moves he knows at any given time in the anime, but have no EV cap to potentially make him broken (or weak as shit without them).
