violence is not too bad. Plenty of futuristic robot battles some humans very occasionally die, but this was made in the 60s, so it is caried out in a very mild way (all you see is a lifeless body, with a buise or two). To tell you the truth, I think a tough 6 year old can take the violence, but you should watch this with any kid younger than 8 due to some sad things that happen in just about every episode. you can watch the original one and 2004 version on hulu (nobody under 8 should watch that one at all). 1963: iffy 6-7 2004: iffy 8-9