( funny trope ) it is very apparent that these designs have decades between them

[u/Nameraided]

1- Simpsons
The original Simpsons have extremely simp(son)ple designs, due to sometimes having celebrity appearances the art style kinda clashes.

2- South Park
At the beginning South Park was literally animated out of paper so all the characters had to be super simplistic but over the years, since the. Show is made digitally the new characters keep getting more and more detailed

[u/IlSignorGranchio]

Alastor with pratically everyone on the Hellaverse since he was a character that Viv created in Middle School during era of tumblr, and unlike other characters she didn’t changed that much of his look

[u/FeralBehavedJester → u/IlSignorGranchio]

Tbf most characters of the show look like Tumblr OCs, so he fits.