We already have 3 main villains in Wizard101: Malistare- The Undying Morganth- The Shadowed Old Cob- The Serpent
Thus, The 3 Arc is about to end right after Empyrea, and we still don't know who might be the new villain... Except for Grandmother Raven- The Creator.
But if you could think of the next Unlimited Villan who will it be? And what is the back round that stands behind him\her?
Very interesting... Isn't Old Cob a Spider not a sneaky snake? Also from a Lore perspective, Grandmother Raven isn't "The Creator" she, Bartleby and Spider are Primordial beings- the "beings that were here after "The Creator" finished placing the stars in the sky." So she's probably more aptly described as Light or Lady Nightstar or something. I don't know- side rant. I don't know if necessarily the world will follow the 5 world format? Maybe they're going to throw us a curve ball? Also I think we will have two more worlds with Old Cob. The Forsaken Shores and Forgotten Lands. Basically, we only have been to Polaris, Mirage and Empyrea so 3/5 for that mechanic.
As far as who could be the next Villain? I think that rusher makes a good point. I also think that it's possible that we might also encounter some enemies that are not "Spiral Destroying" but more personal- perhaps like Belloq? (I doubt it will be Belloq, but I bet that he'll be back at some point) I also wonder if we'll ever discover the dark forces that have overcome El Dorado? We also have not encountered the Storm Titan.
They should do something different for sure. Why not find the 6 strongest students in the Spiral, one from each school, and make them like a super-group of villains (make them into NPC's) and you have to defeat one at the end of each world (maybe like 2 in one world so there would be 5 worlds) and once you have done that you become the strongest wizard in the spiral and the game ends.
What about Medulla? He's the perfect evil who hates and wants to destroy the spiral along with all of Human kind. He know's what we are capable of doing. Medulla can create an army to match our strength and declare war on Wizard City including Arcanum. Grandmother Raven?; possibly. At the end of Empyrea part 1 she did say "the spiral must be destroyed"