Characters are naked during the show, however, all nudity is covered by things like hair.

At one point two characters start kissing (one is significantly older than the other). It is later heavily implied that they had sex.

Characters wear clothing that is somewhat revealing.

Most of this season (so far) is a giant war. However, very little blood is ever shown, as most enemies aren't even human and instead burst into blue flame.

Sometimes the characters with blood are hurt and bleed, but it isn't a major problem.

Damn, hell, and bastard are used on occasion

At one point a character is seen with a cigarette in his mouth. He doesn't smoke it or even light it, however.

Some of the denizens may be frightening.

One of the main character's alternate form may scare younger viewers.