I had a shiny Mankey I caught in Y's Friend Safari, didn't realize it was shiny until it was on its way out to Wonder Trade. Then in Alpha Sapphire I found an Electrode, which then went and did what Electrode do.
Didn't see another non-guaranteed one until a Magikarp in Violet. Woohoo.
JonThePenguin
http://www.backloggery.com/main.php?user=erunion