No. Their parents may be able to get a restraining order on the minor's behalf.
No, only born people can get restraining orders.
No, but you can file for your own separate restraining order too if you have proof that you have been abused.
No - anyone, citizen or not, can file, and be granted a restraining order.
You can file for it, but you have to convince a judge to agree with you. However, if the person you are restrained from is seeking you out and/or harassing you, you absolutely need to contact the court for advice. But if you simply want to file a restraining order against them just because they filed one against you, you won't convince the judge.
Depends on the age of the child. If under 18 he/she is a minor and the answer is no. You have to deal with the problems that exist. If over 18 they are an adult and yes you could file a restraining order.
You can file a restraining order on almost anyone.
It depends on the laws of your particular state. You could go to your local police department and/or your local courthouse and they should be able to give the forms to file the restraining order.
Appear before a Justice of the Peace and file a information.
Yes, if he is the children's father, and you are not the ex's new husband (the children's stepfather) it is possible. The outcome will be decided by a judge.