If a praying mantis were actually human sized then it could easily fight another human and possibly kill or injure the human.
However even then a human sized praying mantis could easily be killed by a human if the praying mantis attacked a human.
Someone could easily shoot and kill the human sized praying mantis.
Praying mantis are not dangerous but they can bite when they feel the need too.
So you must be careful around the praying mantis to avoid being bitten.
A praying mantis is not dangerous to humans.
Although praying mantises can and do sometimes bite humans when they are picked up or touched the bite from a praying mantis is not dangerous and only causes a little bit of pain.
The bite is not poisonous to humans so there's no harm other than getting bitten by the praying mantis.
If you do pick up a praying mantis it's best to wear gloves.
The praying mantis is dangerous and deadly to grasshoppers, crickets, spiders, or even hummingbirds.
But to humans the praying mantis is harmless except for getting bitten possibly.