Friendship is the backbone of The Man in the Iron Mask, but it rapidly disintegrates throughout the book. The four men, once bound by their motto of "all for one and one for all," have grown apart from one another. Political, familial, and career motivations threaten the once inseparably loyal friends. Their friendship was once very simple. Now it is complicated.
Aramis is a horrible friend to Porthos.
Fouquet's friends display the truest form of friendship to be found in the novel.