Gibson caused outrage when he was arrested for drunk driving in July in Malibu, California, and subsequently made racial statements to his arresting officers.
He has been condemned by a number of celebrities, but Downey Jr. says, "He's an artist and he's imperfect like the rest of us. I don't know if I could ever be there for him as much as he has for me.
"I've talked to him and seen him. He's doing great, he's a good dude and he's taking care of himself."
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