There's a 'standard safety briefing' sequence in the James Cameron-scripted film Avatar where 'Colonel Quarritch' talks about how the indigenous Na'Vi (blue monkeys) have bones 'reinforced with naturally-occuring carbon fibre, they are very hard to kill'.
And it reminded me of the case of near-indestructible twins Ursula and Sabine Eriksson, who were filmed in 2007 by a BBC documentary film crew on the M6 motorway in England being run over in the fast lane. Not once, but twice! And showing very little in the way of injuries for their efforts.
Here's a link to website 12160 who have a full dosier on this woman, Sabina Erikkson.
There's additional footage that purports to show Russian surveillance footage from a helicopter or four unarmed men chasing down a machine-gun armed opponent before RIPPING HIS ARMS AND LEGS AND HEAD from his body. I'm including it here with the caveat that it might be 'from some Russian film' or something but it's a corker.