Share some Pokemon facts you felt you were the only one who knew about them!

What the title says, share some facts you knew but probably felt other people didn't, and maybe enlighten others with these facts. Here's mine:

Once totem Alolan Raticate comes down from the slope to battle you in Moon/UltraMoon, he plays the cry of the gen7 rodent thing (who is the totem for the other version). I thought it was just an oversight in UltraMoon but turns out he also has that cry in the original as well. Huh.

Generation III is the only Generation where the National Dex ends with an even number.

Sometimes I feel i'm the only person who's memorized Korrina's "Lady Korrina" title from the games, lol.

xD;