DiscoverMark McDermottMark McDermottActorKnown forA Family Circus ChristmasDecember 18, 1979A Special Valentine with the Family CircusFebruary 10, 1978A Family Circus EasterApril 7, 1982Acting31982A Family Circus Easter as Billy (voice)1979A Family Circus Christmas as Billy1978A Special Valentine with the Family Circus as Billy (voice)