My recent Felix the Cat fixation helped me detect a rule of thumb for certain male cartoon characters. They may have girlfriends and/or female relatives, but not wives. And they may have nephews and/or nieces, but not children:
Why this rigidity? These characters were created under different studios (including Disney, Hanna-Barbera and Universal) at different times (from 1919 to 1969). I can understand why fans would find real-life stars more appealing as child-friendly but childless bachelors, but cartoon characters? Is this a case of anthropomorphization gone amok, or are these preferences more subtle expressions of the creators of these characters?