His family released a statement that said "so many of you have been touched by not only the work and art of Don S. Davis, but by the man himself, who always took the time to be with you at the appearances he loved, that it is with a tremendous sense of loss I must share with you that Don passed away from a massive heart attack on Sunday morning, June 29.
"On behalf of his family and wife, Ruby, we thank you for your prayers and condolences. A family memorial where Don's ashes will be scattered in the ocean will take place in a few weeks, and should you wish to, please make a donation to the American Heart Association in Don's memory."
"Stargate: Atlantis" executive producer Joseph Mallozzi told reporters during a conference call July 1 that Davis would certainly be missed.
"He had a bigger heart and was even nicer than the Hammond character that he played," Mallozzi said. Fans "would approach him in the sense that they were approaching Gen. Hammond. but once they got to know him, they got to know Don Davis, a very warm-hearted, incredibly self-deprecating man, who sadly will be incredibly missed by not just the fans, but anyone who worked with him."