S.C. Code Ann. § 1-7-55: Counter-claims, cross-actions, or other actions on behalf of public officers and employees.

When the Attorney General undertakes to defend any civil action or proceeding on behalf of any officer or employee of the State, or of any political subdivision of the State, he may, in his discretion, upon the request of the officer or employee, enter and prosecute a counter-claim, cross-action, or any other appropriate action in the suit on behalf of the officer or employee.