William Atherton as King Bowser Koopa - The New Super Mario Bros. Super Show! Fan Cast | myCast.io
William Atherton
Age: 78
male
From Wikipedia, the free encyclopedia
William Atherton Knight (born July 30, 1947) is an American actor, best known for portraying Richard Thornburg in Die Hard and its sequel and Walter Peck in Ghostbusters.
Join Mario, Luigi and the rest of the gang in a brand-new animated series where they meet new friends and enemies, discover many secrets of the universe, and spring into action against King Bowser and other forces of evil!
