The British actor died last Friday, but news of his death was announced on his official website on February 5:
"Please join us in raising a glass to Robin - goodbye, dear friend. Thank you for all the laughter and the cookies. We will miss you so very much."
Further details about the actor's death have yet to be revealed.
The actor (who was just four days shy of his 62nd birthday) is best known for playing villainous character Ethan Rayne on the hit series BUFFY THE VAMPIRE SLAYER. He also played roles in BABYLON 5, STAR TREK: VOYAGER, TORCHWOOD and UPSTAIRS, DOWNSTAIRS.
In 1991 he played Adam Carrington in the DYNASTY reunion movie. Watch the opening below: