He was born John Paul Salapatek in Blue Island, Illinois, a southern suburb of Chicago, on June 16, 1959. As a child, Franklin had a growth hormone deficiency; as a result, his adult height is "barely 5 feet", or roughly 152 centimeters. In 1977, John graduated from Dwight D. Eisenhower High School. He graduated from the University of Illinois in 1983 with a BFA in theater and teaching.
Career
In 1983, John Franklin moved to Los Angeles, California to pursue a career in acting. He appeared in commercials before successfully auditioning for the role of Isaac in Stephen King's Children of the Corn. After Children of the Corn, Franklin went on to guest star in two episodes of the kids' variety showKids Incorporated, "The Leprechaun" and "Space Case." He appeared in many commercials before guest starring on Highway to Heaven as Arnie, a mentally handicapped teenage runaway. He would also play Chucky in shots where the killer doll was seen walking in the 1988 movieChild's Play. In 1991, Franklin landed the role of Cousin Itt in The Addams Family; he reprised the role in 1993's Addams Family Values. Throughout the 1990s, Franklin appeared as a guest on several TV shows, including Chicago Hope and '. He co-starred with David Morse in the independent 1997 filmGeorge B. and with Steve Guttenberg in Disney’s TV movie Tower of Terror the same year. In 1999, Franklin reprised his debut role, Isaac, in ', co-writing the script with his cousin Tim Sulka. In 2000, he landed a small role in Python and co-starred as Morluv in The Christmas Secret. Franklin formerly worked as an Englishteacher at Golden Valley High School in Santa Clarita, California. He explained,
After the events of 9/11, I saw the shallowness of showbiz and felt a great desire to leave a greater legacy than just being Cousin Itt. Teaching seemed to be a perfect fit for my theatrical talents and to touch many lives."
At the end of the 2015-2016 school year, Franklin announced to the students and staff of Golden Valley High School that he would be retiring from teaching to reprise his career as a writer and actor. He is currently working on several projects, including a young adult novel.