His name is Thurl Ravenscroft, and he was the voice actor who portrayed Tony the Tiger for more than fifty years.
He spent five decades as the voice behind one of the most popular cereal mascots of all time, however, for most of that time, no-one knew who he was!
His work was often uncredited, including his stellar performance on “You’re a Mean One, Mr. Grinch.”
He passed away in 2005, but if you are visiting Disneyland or Disney World you can still hear his voice! He did voice-over work for many rides and attractions, including the Haunted Mansion and the Pirates of the Caribbean ride!