User blog comment:Emptylord/Leaked Champion: Vel'Koz/@comment-24440355-20140119111055/@comment-3974211-20140119142457

It's still possible it's a really well-made fake - based on the silhouette of an unknown character. I'm fairly certain there were images of the silhouette in Battle Bunny Riven's artwork, before it was known to be Zac - although none of them went so far as this. :P

...don't get me wrong though, this is probably real.