a troublemaker
Examples
If you aren't a peacemaker at least don't be a troublemaker.
If the potential damage is moderate or in any way reversible, don't give people the chance to say no. Most people are fast to stop you before you get started but hesitant to get in the way if you're moving. Get good at being a troublemaker and saying sorry when you really screw up.
All of them turned their backs on me at that time because they thought I was a troublemaker.
When I was in high school, I wasn't a troublemaker. I didn't get in fights. I was a good student and I had a lot of friends.
I don't do anything in order to cause trouble. It just so happens that what I do naturally causes trouble. I'm proud to be a troublemaker.