Who is leading these sessions?
A professional?

The purpose of group therapy is to learn what is meant when people arouse your painful parts of your personality.

Does this guy do this to other members of the group? Or only you?

Years ago Eric Berne MD wrote a book called Games People Play....which he developed a system to explain how people react to each other.
Here is his website:
Description of Transactional Analysis and Games by Dr. Eric Berne MD

and
Games People Play | Eric Berne | Creator of Transactional Analysis

Many therapy groups use his ideas as a platform for improving human communication.

It sounds to me like this member you describe is overusing a parent style to socialize with others, and perhaps that is why he is in the group to begin with?

I read this book eons ago when it first appeared. You could find a used copy on Amazon, and give it a try? Think of it as a roadmap to improve communication. I'd read this brilliant book before trying to confront this guy. You will be better prepared to improve your situation with him if you read it. It was written in an easy to understand style.