My friend, who is a druggie and looks kind of scary at first sight, but is actuallly very nice, sometimes has anger issues and a short temper, will he be fine in the future? Or do you think he will be very violent to be around and abusive?

The title pretty much describes it all. TO sum it up, He’s very nice, but has a very somewhat short temper, and when that happens, he is very scary to be around. Will this lead to abusiveness in the future if he continues to not solve his anger issues?