We have some pretty juicy details about the new demon in Insidious: Chapter 3 as told by the movie's director Leigh Whannell.

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Whannell spoke about the demon in a special set visited hosted by the producers in 2014, the details from which have only started to recently surface. Shock Till You Drop sourced some of Whannell's quotes about various aspects on the film, and one of the most revelatory has to do with his bit about the new demon in the film.

The director shared his vision of the antagonist and where his mind was at while trying to conceptualise him.

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"Well, I was trying to think about him symbolically, as with Jigsaw. With Saw, I was trying to think about what this guy represented, and this idea of sickness and that you might have this clock on your life," he said. "With Insidious 3, I started from what's the film about? And I came to the conclusion that every ghost movie is really about death and loss. Like, that's what ghost movies are all about at their very core. And so I think I deal with that in a more literal way. Like the idea of grief and loss, and how do you deal with it when someone's just not around anymore? What if there's a chance to still talk to them?"

As he went on to explain his thought process and how he arrived at his idea of this villain, he revealed that the embodiment on the demon directed him to cast Michael MacKay, who played Sloth in Seven (1995), for the part.

"And when I came at it from that angle, I thought that for me the guy in this film is the living embodiment of cancer. Like, if cancer was a person, it would be this guy. And so it's amazing, once you have a concept like that, like sort of a fortune cookie concept that you can hold in your hand, it's amazing how quickly the visuals of that occur to you," he added. "Like, if you just think of what would cancer look like if it was a person, I just instantly thought of this guy and the way he looks, you know. And we ended up getting the guy from Seven. I actually said to Fracturd FX, I was like, "You know, the guy Sloth from Seven, that he tied to the bed and kept him there for a year?" And so that's who we got, that guy, Michael MacKay, the actual guy who was tied to the bed.  You know, he's a couple of years older now, but he's that guy, and he just is so great in the role."

Insidious 3 will hit theaters on April 3, 2015. 

Watch the trailer here: