Casey Jon Deidrick, born April 25, 1987, is an American actor and heavy metal/rock singer. Deidrick is best known for originating the role of Chad DiMera on the NBC soap opera Days of Our Lives. Casey Jon Deidrick, born April 25, 1987, is an American actor and heavy metal/rock singer. Deidrick is best known for originating the role of Chad DiMera on the NBC soap opera Days of Our Lives.