Wis. Stat. § 701.0305: Appointment of representative by a court.

If the court determines that an interest is not represented under this subchapter, or that the otherwise available representation might be inadequate, the court may appoint a representative or guardian ad litem to receive notice, give consent, and otherwise represent, bind, and act on behalf of the person who is not represented or whose representation might be inadequate. A representative or guardian ad litem may be appointed to represent several persons or interests.