Edward Furlong, who played the original John Connor has had to go to rehab for substance abuse several times in attempts to kick his habits.
Nick Stahl, who played John Connor in “Terminator 3” went missing for a period of more than two weeks on a drug and alcohol binge before agreeing to check himself into rehab.
Also, the famous tape of Christian Bale absolutely losing his mind at an audio guy who walks on set during filming occurred when the “Batman Begins” star was filming “Terminator Salvation” playing… you guessed it… an older John Connor. Bale unleashed a furious string of curses at the hapless lighting guy, which alerted all of Hollywood to Bale’s very interesting temper.
The “Terminator” series also featured a television show titled “Terminator: The Sarah Connor Chronicles.” Thomas Dekker, who played John Connor this time around was arrested for suspicion of driving under the influence. These stories should serve as a cautionary tale for any actor hoping to resurrect the “Terminator” series by playing John Connor.