Chopper is a renegade, a fighter, and even a graffiti artist. He has had some run-ins with the authorities and with other droids. He even had a small cameo in one of the films. Do we know how old he is?
He is at least 49 years old if he is still alive in Judge Dredd. Here is my calculation 2000Ad started in 1977 and it was the year 2099 in Judge Dredd. For each real year a year passed in Judge Dredd. He first appeared in Prog 206 which was in 1981 = Judge Dredd year 2103 and he is described as a teenager so he is at least 13 years old. So 2017 -1981 is 36 year + 13 is 49