Kevin L. Kirby entered a plea agreement admitting his guilt to thirty-four (84) counts of child molesting. Thereafter, Craig O. Wellnitz, Master Commissioner of Marion County Superior Court, Criminal Division III, conducted a guilty plea hearing, accepted the plea agreement and sentenced Kirby. Wellnitz apparently acted as a Master Commissioner, since there is nothing in the record to indicate that he had been appointed a special judge or judge pro tem to conduct the guilty plea hearing, sentence Kirby, or execute the abstract of judgment. Further, the regular judge of the court, the Honorable John R. Barney, did not validate the actions of his commissioner. As we held in Rivera v. State (1992), Ind.App., 601 N.E.2d 445:
[A] commissioner acts as an instrumentality to inform and assist the court; only the court has authority to make final orders or judgments, and the decision of a commissioner is a nullity from which no appeal can be taken.