"Assault on Arkham" had the beginnings of an overt sex scene.
"Flashpoint Paradox" has pretty gruesome violence - including the killing of children.
I've watched Justice League: Doom with my kids - Throne of Atlantis isn't that bad either. The rest of them since Superman: Unbound (which I didn't think was that great but is probably ok for kids) aren't really for children.
(JL: War isn't too bad that I remember)
"Flashpoint Paradox" has pretty gruesome violence - including the killing of children.
I've watched Justice League: Doom with my kids - Throne of Atlantis isn't that bad either. The rest of them since Superman: Unbound (which I didn't think was that great but is probably ok for kids) aren't really for children.
(JL: War isn't too bad that I remember)