In Epsiode 6, "A Portal To Mystery," you have to question Stampy, Dan and Lizzie about redstone, potions and if they wanted to flint and steel after Sparklez dies. When you question Dan about being the White Pumpkin, his hair is actually white!
Jim Cummings and Kari Walgreen are the villainous Old Builders of the competitor village, Hadrian and Mevia. He was the leader of the old builders, when Jesse has a deal. When Harper came in to themselves. Otto was a nice person when he got trapped. Mevia is the other old builder, when she is the enforcer of the old builders.
Yvette Nicole Brown as Harper, she was the leader of Crown Mesa and Old Builder. She was smart, brave, awesome, smart, and heroic. She tells Jesse to remove the red stone heart. In episode 8 saw the two are the worst.