To make it a bit more explicit: Scopely put the event information, toon data etc. into the game before the event starts/toon releases, usually for straightforward reasons (e.g. so that the event can start on time even if no one at Scopely is present). But if the data is on your local device, there are ways to get at it ahead of time - some games, you can hack to make them believe the event is already running, others you can examine the files directly to get at relevant info.
VK is a Russian version of facebook, that various hacker groups use. They offer help with cheating, and as an additional service/advertisement provide such datamined information. Within this community, VK usually refers to these groups.
[ETA] also @ChaosShooter28, turns out I was right a week ago that we should see Raulito or Hengyen in a week or two. Good for you that you got the ascension going then! Mine is still 5* maxed, but he’ll be perfect to get 3 mil on both levelups for event stuff, and maybe some Guo cards.