I recieved a Shiny Lv. 100 Keldeo through the GTS. The OT was SMR2012 and it came from a ´´lovely place``. It was probably the event Keldeo, but how come it was a shiny then? And it had a ribbon, so how was this possible?
There are a few options that you have: - You got it when you just entered the GTS - You got it through a trade
The first one is really not that peculiar as it might have been that the Keldeo was generated by a fake GTS and was then sent to your game. It isn't necessarily you but many people have their neighbours using their IP-adress
However the second option seems most likely. Many people on GTS hack their Pokemon as it is perfectly normal to generate a shiny Pokemon with a certain OT number so that it looks legit. There are also various softwares that allow you to literary create your own Pokemon with any OT you like. Since you can also make it legit, they too can be seton the GTS and ready for trade
As I mentioned earlier, the second option is most likely