The podcast says, "We brought in Chucky, 'hey [Chucky], come and promote this cool thing that we built.' It's based on the show, but it's the Ultimate Kill Count, its Chucky the killer doll, so it is the greatest hits. Chucky shows up and he's like, 'You're not KILLING anybody. Nobody's actually being killed.' So HE killed the creators of the house, possessed the dolls that WE made for our haunted house, [Chucky says] 'I'm going to up my numbers and this is going to be epic.' So Chucky has taken over his own house, has possessed all our props, and some of the guests, and maybe some of the attraction workers... and is having a blast doing it."
This truly sounds like our comedy house. Sounds like they had a blast making it hilariously not a "book report house" too.