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.

He played the half-human, half-demon Cole Turner in the WB supernatural series “Charmed” and a self-destructive playboy in the FX series “Nip/Tuck.”

Following the passing of Fantastic Four's Julian McMahon, franchise star Ioan Gruffudd has shared a touching tribute to the late Doctor Doom actor.