Mark Hamill proved to be a great choice for Chucky, reportedly going above and beyond to take on the character in the recording booth. His version of the character was an A.I. doll who could be connected to other smart home products, in contrast with the doll’s roots. In the original films, Chucky is the spirit of a serial killer. In the 2019 version, he’s a much more sympathetic villain who learns about hate and violence through his experiences.
Article source: https://www.cinemablend.com/news/2480726/mark-hamill-jokes-hes-ready-for-a-childs-play-sequel-if-its-like-this