Welcome to “Firefly Fun House,” where ideas are like gardens that just need a little water and sunshine to grow. (Except for ideas with worms. Those are no good.) Bray Wyatt, of course, knows what it’s like for people to look the other way when it comes to him — as he told the audience, he built the Firefly Fun House so he could be with everyone else who knows what it’s like to not belong. Flanked by his friends, Wyatt spread his arms and invited the audience to join him, transforming into The Fiend. As the feed went to static, Wyatt vanished into thin air, and a new twist on a familiar refrain floated through the empty Fun House: Follow the leader.