If I could give anyone a bit of advice about mimicking the style of your favorite show, it's that I highly recommend looking at & studying the background characters before you decide to pull traits from main characters
the powerpuff girls look different from the other children from pokey oaks kindergarten, dib and zim look different from other skool children or irken invaders, simpsons background characters are not allowed to have stuff like lisa and bart's hair or homer's 5-oclock shadow in normal circumstances
background characters are meant to be 1) numerous and 2) blend into the scenery, so they're a great way to see what the ppl making the show consider the average and consistent traits they want to repeat in order to fill a crowd or make new side characters
and then once you understand that, THEN you can go nuts and break those conventions, make your cool as hell ocs, and appreciate why the main characters stand out the way they do








