Eddie Albert. Eddie Albert was 50 in Our Mr. Sun as 'The Fiction Writer'.
Lionel Barrymore. Lionel Barrymore would have been no older than 76 in Our Mr. Sun as 'Father Time (voice)'.
Frank Baxter. Frank Baxter was 60 in Our Mr. Sun as 'Dr. Research (as Dr. Frank C. Baxter)'.
Marvin Miller. Marvin Miller was 43 in Our Mr. Sun as 'Mr. Sun (voice)'.
Sterling Holloway. Sterling Holloway was 51 in Our Mr. Sun as 'Chloro Phyll (voice)'.
Frank Capra. Frank Capra was 59 in Our Mr. Sun as 'Writer, Director, Producer'
William T. Hurtz. William T. Hurtz was 37 in Our Mr. Sun as 'Director'
Arthur S. Black Jr.. Arthur S. Black Jr. was 55 in Our Mr. Sun as 'Assistant Director'Harold E. Wellman. Harold E. Wellman was 51 in Our Mr. Sun as 'Director of Photography'Frank P. Keller. Frank P. Keller was 43 in Our Mr. Sun as 'Editor'
Paul Julian. Paul Julian was 42 in Our Mr. Sun as 'Background Designer'Wiard B. Ihnen. Wiard B. Ihnen was 59 in Our Mr. Sun as 'Set Designer'