Brady Bluhm: Brady Bluhm. Actor: Dumb and Dumber. Brady William Bluhm is an American actor from San Bernardino, California who is known for playing Billy in 4C from the Dumb & Dumber franchise and voicing Christopher Robin in various Winnie-the-Pooh cartoons and games. He is married to Abbie since 2010 and had a few children. He is a Latter Day Saint.