What does a defence barrister do?

Barristers are lawyers authorized to practice before the bar. In most countries that are based on the British system, there are two types of lawyers, Barristers and Solicitors. Solicitors do...

it protects someone or something from danger such as a deers horns protect it from hunters and predator's

In criminal law (English and Welsh law), you have the barrister for the crown who is against the barrister representing the defence (so a barrister to defend the accused person/party).

nine players

Yes but not because of a decision they made based on their job. They can be sued for something they did outside of their line of work although it will be an uphill battle to win though because they...