Underdog

In heraldry, a coat-of-arms with the "bar sinister" or "bend sinister" indicates a bastard. This isn't the only case of cartoons sliding in somewhat "adult" references.

Dudley Do-Right once chased a villain to a place called "Colderinell" (say is fast). I might not have spelled it right, but the concept is the same.

I'm certain there are many others like it that I didn't catch but hey, I was a kid at the time.

I have to agree with several other reviewers that the cartoons of those days beat the heck out of those seen today. I think cartoons started going downhill when "...and it would have worked if it weren't for those meddling kids" became the tagline.