1. Defeat Gomess!
    (monsters: Gomess / Littra)
    original airdate 1/2/66

  2. Gorah and GORAH
    (monster: Gorah)
    original airdate 1/9/66

  3. A Present from Space
    (monster: Namegon)
    original airdate 1/16/66

  4. Mammoth Flower
    (monster: Juran)
    original airdate 1/23/66

  5. Pegila Has Come!
    (monster: Pegila)
    original airdate 1/30/66

  6. Grow, Turtle!
    (monsters: Gameron / Dragon)
    original airdate 2/6/66

  7. S.O.S. Mount Fuji
    (monster: Gorgos)
    original airdate 2/13/66

  8. Baron Spider
    (monsters: Tarantula)
    original airdate 2/20/66

  9. Underground Superexpress to the West
    (monster: M-1)
    original airdate 2/27/66

  10. The Terror of Sweet Honey
    (monster: Mongulah)
    original airdate 3/6/66

  11. Balloonga
    (monster: Balloonga
    original airdate 3/13/66

  12. I Saw a Bird
    (monster: Larugeus)
    original airdate 3/20/66

  13. Garadama
    (monster: Garamon)
    original airdate 3/27/66

  14. Tokyo Glacier Period
    (monster: Pegila)
    original airdate 4/3/66

  15. Kanegon's Cocoon
    (monster: Kanegon)
    original airdate 4/10/66

  16. Garamon's Counter Attack
    (monsters: Garamon / Cicada-Man)
    original airdate 4/17/66

  17. 1/8 Project
    (no monsters)
    original airdate 4/24/66

  18. The Rainbow Egg
    (monster: Pagos)
    original airdate 5/1/66

  19. Challenge from the Year 2020
    (alien: Kemura-Jin)
    original airdate 5/8/66

  20. Underwater Humanoid Ragon
    (monster: Ragon)
    original airdate 5/15/66

  21. Space Directive M4774
    (monster: Bostang)
    original airdate 5/22/66

  22. Transformation
    (monsters: Morpho-Butterfly / Giant)
    original airdate 5/29/66

  23. Rage of the South Sea
    (monster: Sudar)
    original airdate 6/5/66

  24. The Statue of Gorga
    (monster: Gorga)
    original airdate 6/12/66

  25. Devil Child
    (monster: Rirah)
    original airdate 6/19/66

  26. Burn On, Glory!
    (monster: Peter)
    original airdate 6/26/66

  27. Flight 206 Dissappears
    (monster: Todora)
    original airdate 7/3/66

  28. Open Up!
    (no monsters)
    original airdate 12/14/67
    (I have no explaination for why they waited more than a year to air episode 28. Maybe they originally decided not to air it.
    Then later, with the success of Ultraman, they decided to air it)
Episode information courtesy of the Wayne Brain Co.