I think you can still get them through facebook.
no longer can for facebook
I thought you might be able to get him by doing a certain achievement? Not sure has been awhile.I got it when it was still available on facebook but if there is an achievement to get him with I'll help you out if you need.
you need to earn 5 mil on hoard to unlock him
Just onyxed this for the 11th time yesterday........"I'm RICH *****!" that is a great title for a medal,lol.