Pax has been exposed to movie-making since Jolie and Pitt adopted him in the early 2000s. Fernando Ferro, Garrett Patten and Pax Joile Pitt attend Self Custody Film Panel and Moviemaker Indie Film Celebration. Jolie adopted him in 2007, while Pitt later formally adopted their son in 2008, as regulations made it difficult for unmarried couples to adopt. Then, in 2008, their household grew even more when Jolie and Pitt welcomed their twins, Knox Léon and Vivienne Marcheline, now 17. When Pax joined their clan, Jolie told MSN that he was a "tough, remarkable little person," who was adjusting well.