Hidden MVP! How to Find Them?

You might notice that some MVP doesn't appear in MVP list, like Wolf Grandma or Eremes. It is because they need to be manually summoned.

They can be summoned by defeating certain special monster in certain maps as following:

Like regular MVP, they have 2 hours respawn time. However, they are slightly different because the 2 hours starts counting since the last one is defeated (instead of every x:00 minute). Exception to this is Deje that spawns 30 minutes since last defeated (because it's Mini).