Originally posted by Surtur
I'm actually wondering...have they *ever* explained why Chucky(or his human self) had this magical power to move his soul into a doll?
It was explained in the first movie that this one guy named John taught voodoo magic to Charles Lee Ray and his associate, specifically on how to transfer their souls into other bodies if they ever were in danger of dying/going to jail. Chucky later goes to his house and murders him with a voodoo doll when John wants nothing to do with him anymore.
The director cites Nightmare on Elm Street 3 and Inception as influences, a portion of the film is set in an asylum
http://screenrant.com/cult-of-chucky-influenced-nightmare-on-elm-street-inception/