Michael Clarke Duncan (born December 10, 1957 - died September 3, 2012) was an American actor. In Brother Bear and Brother Bear 2, he provided the voice for Tug. In deleted scenes of Brother Bear, before Tug, he provided the voice for Grizz. He passed away on September 3, 2012 from cause of heart attack.
He is known for voicing Future Wade from Kim Possible: A Sitch in Time, Sam from Cats & Dogs, Hayden/Krall from Teen Titans, Big Daddy from The Land Before Time XI: Invasion of the Tinysauruses and Commander Vachir from Kung Fu Panda.