User blog comment:Magma MK-II/Characters that shouldn't be here, Part 5/@comment-26884760-20160127170520/@comment-366087-20160128131842

I agree with nearly everything Tearface said, but point out that Elmer was originally sustenance-hunting due to his line of "for my wabbit stew".
 * personal anecdote—as a child watching the show for the first time, my parents called me and my sister to dinner. We asked to finish the cartoon. When we got to the table, dinner was mostly tunafish salad. To which Rav and I said, "Oh boy, wabbit stew!"


 * It's been "wabbit stew" for our family ever since. Ironically Mom lived on a farm during the great depression and she grew sick of eating rabbit.

Still, I agree, the nature of cartoon shorts ala Looney Tunes means a character's role is often writer/episode dependent.

Perhaps an average of their role over the course of their appearances might be a qualifier? Say at least 1/4th of their appearances. For example if a character is only cast as a villain in 1 out of 20 appearances they do not qualify, but 5 out of 20, yes, with the tag of Writer Dependant.
 * Because some franchises are decades old, this need not be a hard math count-every-episode thing. A "feel" could be enough.