I'm going to catfish someone who hurt my friend
What is your reason for wanting to try and catfish somebody?
The person is a bad person. They hurt my friend as of recently and I really want to try and get back at them.
You are behaving in a vengeful way and that is never right. Getting revenge tends to backfire. It is best to let your friend handle his own problems.
I can do what I want.
You are just stooping down to the level of this person you are upset with. You are basically going to become the same as them by doing something like catfishing them. Why not be the mature one in this situation instead.