Future Season themes.
- Well, let's start with the obvious: the Bowser boards, with Waluigi's Island and...let's go with Clockwork Castle filling in on the games that don't have it.
- Jungles, with possibly Creepy Cavern filling in on 3. Don't know what would fit in 5.
- Cutesy stuff
If they LP Mario Party 10, Mr. Doom will be Bowser.
Finally, he's the ultimate freakin' cheatin' stinker.
- Alternate option: Reverend Inferno, under the pretext of Bowser collecting for Waluigi's Polio Fund. And he's been popping up again, in the Randomized Emerald Nuzlocke challenge and the 2000 Subscribers Video.