Minn. Stat. § 558A.29: GUARDIAN AD LITEM; WHEN APPOINTED.

Upon the petition of any party, or of any person interested in the proceeding, or on its own initiative, the court shall appoint a disinterested person to act as guardian ad litem for minors, and other persons under disability, and for all persons not in being who may appear to have any interest or lien upon the land. The compensation of the guardian shall be determined by the court and paid from the person's share of the proceeds as part of the expenses of the proceeding.