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.

A ctor 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.

Julian McMahon's last acting role before his death was playing the prime minister of Australia in Netflix's murder mystery series "The Residence."