This is a show that I love to watch! But there are loads of things unsuitable for children 16 and under in the show.The site haven't given very much detail at all in their information, so I'll give you a better, detailed problems that Heroes contains. Gore - The villain cuts off new superheroes' heads in order to 'extract their power. This process is incredibly bloody and disturbing and occurs a lot throughout the show. Brain can be visible and screams of suffering and pain can be heard. One of the main protagonists suffers through various mutilations, yet can heal her wounds quickly. She suffers numerous incidents such as; jumping off bridges with a bad aftermath, sticking hands into a waste disposer, her head cut open in a failed attempt to steal her powers, dropped from heights, autopsied on (very bloody detail shown), burning her hand in an oven, attempting to cut off her toes with a kitchen scissor and many more! However, she quickly heals from all these incidents. Bloody stabbings, repeated puches to the head, a shooting to the eye and a man found dead without his cranium, and frozen in a fridge are only a few things in the show that lead to a blood-filled consequence. Violence - Blows to the head, action fights, bloodied scenes (a woman is found dead on a wall with knives that pierce through her body to keep her on the wall) and a scene with a man being painfully stabbed with paintbrushes, to keep him still on the floor. In all these scenes, suffering and pain is very clearly portrayed and a bit of sadism from the villain is shown during it. Horror - Not a lot of horror content in it. Some jumps, with scary, bloodied faces flashing on screen. However, mostly threat is involved in the show, with helpless victims running from the villain and failing to escape, before having their cranium painfully sliced off. Many beloved and innocent characters die in grotesque ways, which could upset younger teens. Language - Moderate uses of moderate language (Common sense media won't let me write it down). S*xual Content - Quit a lot of inappropriate content, including an attempt of r*pe upon the main protagonist (claire) towards the beggining, s*xual relationships between characters are obvious and one night stands often occur in early seasons. Often characters are found in bed with one another.
In conclusion, the gore and violence in the show are graphic enough to turn stomaches of adults, let alone children. If your kids are strong enough to endure the pain and gore characters suffer through, then at the minimum 14 year olds may be able to watch it. But not any lower.