Has got to be Marvel's Savage Sword of Conan series by Curtis Magazine (an imprint of Marvel).

It had all kinds of sex, violence, and nudity in it because it was considered a "magazine" back in the late 1970s and was thus not subject to the comic book codes of that era.

It was a sweet series that really brought Robert E. Howard's Conan to life.
I recommend it to anyone who can still get their hands on the series.

There may have been a graphic novel adaptation of it as well, but I'm not sure.