A more thorough explanation:

A law guardian is a type of guardian ad litem who is appointed by the court to represent the best interests of a child or an incompetent person in a lawsuit. The law guardian is usually a lawyer who acts as an advocate for the person they represent.

For example, in a custody battle between parents, a law guardian may be appointed to represent the child's interests and make recommendations to the court about what is in the child's best interests. The law guardian may also be appointed in cases involving abuse or neglect of a child.

The law guardian is different from a general guardian who has control over the person and estate of the ward. The law guardian's role is limited to representing the person they are appointed to represent in a specific legal matter.