What are the outstanding characters in "Paris"?

"Paris" is a love ethics film directed by Bernardo Bertolucci and starring Michael Pitt, Louis Garrel and Eva Green. The film takes the 1968 student movement in France as the background and tells the story of three young men, Leo, Mathieu, and Isabella, who explore their dreams with passion and travel in the torrent of history.

Every character in the movie has their own story and personality, and some of them are really great. For example, Leo, played by Michael Pitt, is a talented photographer who meets two girls in Paris and begins a love triangle. Matthew, played by Louis Garrel, is a young writer who also has an important role in the film. Isabella, played by Eva Green, is a young girl who meets Leo and Mathieu while traveling in Paris and joins them on their adventures.