Professor Stanton
From Multiversal Omnipedia
Professor Stanton was one of Indiana Jones' colleagues at Barnett College. He and another colleague, Dr. Mulbray, approached Jones shortly after his return from the Portuguese Coast and asked him to authenticate a fertility idol. Jones proved it was a fake by breaking it in half and showing Stanton and Mulbray the cross-sections.
Comments
Neither Stanton nor Mulbray appear in Indiana Jones and the Last Crusade or its script, despite being listed in the credits. However, they are in the novelization but not identified by name.