Like Little Lizzie, Mad Max was trapped at the Gun Club as a wild kitten.
Since I gather Mad Max’s name was inspired by his behaviour, it sounds like he was a very wild kitten indeed. These days he’s calmed down and will accept, sometimes even welcome, a little human attention.
He’s still pretty wary of people though, and so may allow some pats one time and then flee the next if you come on too strong. It seems he’s more comfortable with his cat friends, often hanging out with Jett and other ferals.