The real name of Chucky is Charles Lee Ray, which is derived from three well known real life killers - Charles Manson, Lee Harvey Oswald and James Earl Ray.

The filmmakers closed the famed Chicago loop as they filmed the massive toy store explosion sequence. A team of pyrotechnics experts rigged the mock store with explosive charges and set off the fiery blast, obliterating the front windows. Yet amazingly, only a few of the toys were actually destroyed; the rest were donated to charities that included the Children's Memorial Hospital and Ronald McDonald House.

The babysitter's death scene originally had her being electrocuted while taking a bath. The scene was used later in Bride of Chucky.

In all, nine menacing Chucky figures were constructed for the film: a simple "toy" doll; a doll that could stand upright; a doll that could walk; two hand-held puppets for quick, specific movements (such as sitting, biting or flailing about); and expendable "stunt dolls" that could be tossed round the set or otherwise subjected to rough treatment.

Original writer Don Mancini stated in an interview that his original script toyed with the audience a bit longer, making them wonder if young Andy was the killer rather than Chucky.