I seem to have stumbled upon something very interesting;
It came from a drink called Guarana Antarctica, a type of soda manufactured in Brazil.
Apparently, in Pokemon's heyday, special edition drinks were released, that came with tiny figures in the caps:
Apparently they made sets for Gen 1 and 2 :D
I was totally shocked when I found this set of figures...and even more shocked to find this:
He's so awkwardly posed and adorable! :B
Unfortunately, the only place I can find these figures for sale is on Brazil's version of Ebay, and I have no idea what any of it says. ;_;
If anybody has one of these Mewtwo figures for sale, please let me know! :3 Otherwise, just wanted to share what I thought was a really cool little find on the big ol' interwebz.
Update: Apparently a comm member (caterpie) knows all about these figures in-depth. :3