The obvious is he is born with a kidney disease and couldn't grow past 5 feet
Gets his own tv show but gets sick of playing the character and that is all he is known for
Plays Arnold on like 7 different tv shows
Is a part of the pedophile episode with the Maytag man
Parents took all his money from Diff'rent Strokes, he sues them and wins but goes bankrupt later
Admitted he tried to commit suicide twice with sleeping pills
Dude can't get any acting jobs at all and has to get a job as a security guard
Needs cash, so sells a bunch of his shyt on eBay
Gets married, but his wife cheats on him and abuses him in public
Dude couldn't catch a break in life