ITT: post interesting, fun, and/or obscure bits of Pokemon trivia that you're proud of yourself for knowing.

I'll start: in gen 4 and prior, the games' data considered "typeless" as a type in and of itself. Thus, Arceus has a "typeless" palette (pic related), and in my opinion it's one of the cooler colorations it can have. It's a shame it was never used.