Cerebus the Aardvark is a barbarian fighter who also happens to be an aardvark. A very stylized and cartoony aardvark. He was created by Dave Sim, a Canadian artist who, a few years into his cult comic book series, had a personality breakdown and adopted a new philosophy that alienated huge numbers of his fans. The Frank Miller of Jordan Petersons, you could call him.
The big difference between comic book culture from the pre-War days through the 1970s and that which took hold in the 1980s was the spread of the comic book store. When comics were sold primarily through newsstands they encouraged a kind of casual engagement with narrative. If you had fun with the story involved you'd gotten your quarter's worth.
Comic book stores enabled stronger content in terms of sex and violence, yes. But they also created a new audience who looked for longer, more involved, and in some cases more obscure narratives than had been available before. Heavy marijuana users, you might guess, and in a number of cases you'd be right.
Comic book stores always had Cerebus merchandise front and center, making him a mascot of the industry. Along with Omaha the Cat Dancer, whose title was basically furry erotica, but with a higher level of craft than the webcomics that would follow in her wake.
Anyway, I'm not really a big follower of epics, with some exceptions, which is why I never got into the Cerebus thing myself. Sim does seem to have been an accomplished artist, or at least gradually became one. And as I said before, the stories provoke interesting reactions from some other critics, like the ones I linked above.