Why are Homer and Marge not given voice credits?
For some reason, voice credits were not given for the parents at all, because the actors who play them (Dan Castellaneta and Julie Kavner) were already part of the existing Ullman Show cast. In fact, during the early run of shorts, the parents were not even properly credited as Homer or Marge. Occasionally, they are referred to as “Mr and Mrs Simpson”, even though Bart and Lisa had already established the practice of calling them Homer and Marge instead of Mom and Dad.
