A Fantastic Four star shared a touching tribute to Doctor Doom actor, Julian McMahon, following his surprising passing.

Holly Marie Combs, Rose McGowan, Michael Chiklis, Dylan Walsh, and Joely Richardson also shared their memories following the actor's death at 56.

Actor Julian McMahon has passed away at 56. While he’s best known for Nip/Tuck, McMahon’s decades-long career in film and television includes performances opposite everyone from Sandra Bullock to Jessica Alba to Nicolas Cage — and starring roles in two separate Marvel franchises.