William David Daniels is an American actor and former president of the Screen Actors Guild . He is known for his performance as Dustin Hoffman's father in The

"Mr. Daniels thanks all his fans for their concern," his rep says

William Daniels

William Daniels, who played the beloved Mr. Feeny on Boy Meets World, tells PEOPLE he'll be filming Cameo videos for fans on his 94th birthday Wednesday

William Daniels has portrayed some of the most iconic characters in television history, including Dr. Mark Craig, K.I.T.T. and Mr. Feeny. See his long life and career in photos

Three decades after the show first premiered, William Daniels reunited with his Boy Meets World costars over the weekend in Chicago for Comic-Con and to celebrate his 96th birthday

William Daniels as John Adams in 1776, stage and screen