Actor Julian McMahon has died at 56 after a private battle with cancer. Former co-stars, including Alyssa Milano and Ioan Gruffudd shared heartfelt tributes.

Actor Julian McMahon, who was known for playing Dr. Doom in the early 2000s "Fantastic Four" movies and starring in fan favorite shows including “Nip/Tuck” and "Charmed," has died. He was 56. McMahon "died peacefully this week after a valiant effort to overcome cancer,

Julian McMahon, the actor best known for starring in 'Nip/Tuck' and portraying Doctor Doom in the 'Fantastic Four' films, has died at the age of 56.