Season 1
1991 · 51 episodes · 20h 24m in all
Elementary school children take control of giant robots to save the earth from the evil Jaku Empire.

Episodes

1. Raijin-Oh Arrives
3 Apr 1991 · 24 min
Eldran piloting the mecha Raijin-Oh crash lands into Hinobori's elementary school. With the last of his powers, Eldran saves the ones in the school at the moment: class 3 of the 5th grade. He entrust them with Raijin-Oh and the duties to protect the Earth, while Eldran goes into hibernation to recover his powers.

2. We Are the Earth Defense Class
10 Apr 1991 · 24 min
Class 5-3 gets a visit from the army, demanding to hand over Raijin-Oh. The arguing is interruped when Jaku Beast Dustoron is running loose in the city. After finding out that only Class 5-3 can operate Raijin-Oh, the army has no choice but leave Class 5-3 alone.

3. Tests Are a Huge Annoyance!?
17 Apr 1991 · 24 min
The entire Class 5-3 average match score of the last test is far below the rest of the other classes and needs to do a retest. Asuka, Kouji, Maria and Tsutomu are assigned to help Jin with his studies as his test score is zero. Jin tries to run away, but in the end can't escape. The next day, right before the retest, Jaku Beast Testora appears and Class 5-3 needs to sortie. After defeating the Jaku Beast, Class 5-3 does the retest much to the dismay of Jin. A couple of days later the tests are graded and Jin has 80 points.

4. Protect the Field of Flowers!
24 Apr 1991 · 24 min
During an excursion, the boys of class 5-3 gets into a fight with the boys from the local. Meanwhile Kouji meets a girl called Kozue, who explains that the locals are angry that more and more trees are being cut for the expansion of the park for tourists. The next day, Class 5-3 hears that Onoboori mountain (the place they went yesterday) became treeless and a Jaku Beast is attacking. Still remembering the fight, Jin is reluctant to sortie. Kouji insist, saying it's their duty as the defenders of Earth and manage to convince everyone including Jin. With the help of the locals Raijin-Oh manage to defeat the Jaku Beast.

5. Decision! Unrivaled Dragon Tail
1 May 1991 · 24 min

6. Survive the Traffic War!
8 May 1991 · 24 min

7. Taking Care of Drunkard
15 May 1991 · 24 min

8. Absolute Union of Friendship!
22 May 1991 · 24 min

9. Blowing Away Moldy Feelings
29 May 1991 · 24 min

10. The Town Where Gasoline Vanished
5 Jun 1991 · 24 min

11. Cookie's Nightmare
12 Jun 1991 · 24 min

12. The Pool is Too Hot
19 Jun 1991 · 24 min

13. Get Back the Baby!!
26 Jun 1991 · 24 min

14. Final Match! Baseball
3 Jul 1991 · 24 min

15. Fly at Mach 9!
10 Jul 1991 · 24 min

16. Crash Course in Returning the Shot!
17 Jul 1991 · 24 min

17. Teacher is a Jaaku Beast!?
24 Jul 1991 · 24 min

18. Presentation! Earth Defense Class' Secrets
31 Jul 1991 · 24 min

19. Seaside School is in Chaos!!
7 Aug 1991 · 24 min

20. Maria has Disappeared!
14 Aug 1991 · 24 min

21. The Enemy is Raijin-Oh!?
21 Aug 1991 · 24 min

22. Departure! The Invincible Warrior
28 Aug 1991 · 24 min

23. Come Forth! Absolutely Invincible Union!!
4 Sept 1991 · 24 min

24. Dog/Cat Panic Plan!
11 Sept 1991 · 24 min

25. Getting the Scoop!!
18 Sept 1991 · 24 min

26. Great African Battle!
25 Sept 1991 · 24 min

27. Defeat the Earthquake
2 Oct 1991 · 24 min

28. Garuma's Competition of Fear!!
9 Oct 1991 · 24 min

29. Appear! Super Jaaku Beast
16 Oct 1991 · 24 min

30. Jaaku beast is a Friend?
23 Oct 1991 · 24 min

31. Fierce Battle! Channel War
30 Oct 1991 · 24 min

32. Adventure in the Haunted House
6 Nov 1991 · 24 min

33. Terror! Dancing Jaaku Beast
13 Nov 1991 · 24 min

34. Skiing is Too Cold
20 Nov 1991 · 24 min

35. Vanished Commander
27 Nov 1991 · 24 min

36. Jaaku Beast is an Ally of Justice!?
4 Dec 1991 · 24 min

37. Graffiti Revolt
11 Dec 1991 · 24 min

38. Psychic Jin
18 Dec 1991 · 24 min

39. The Celebration is a Troubling Thing
25 Dec 1991 · 24 min

40. Belzeb's Great Approach
1 Jan 1992 · 24 min

41. Kidnapping of the Absolutely Invincible
8 Jan 1992 · 24 min

42. Protect the Secret of the School!
15 Jan 1992 · 24 min

43. Super Giant Reiko Appears!
22 Jan 1992 · 24 min

44. Decisive Micro-Battle!
29 Jan 1992 · 24 min

45. Broadcast! Earth Defense Class Facts!!
5 Feb 1992 · 24 min

46. Taida Becomes an Earthling
12 Feb 1992 · 24 min

47. Adult to Child Chaos!?
19 Feb 1992 · 24 min

48. Transformation! Black Taida
26 Feb 1992 · 24 min

49. Appear! Jaaku Empire
4 Mar 1992 · 24 min

50. Defeat Emperor Warza!
11 Mar 1992 · 24 min

51. Our Dreams are Absolutely Invincible!
18 Mar 1992 · 24 min
Matchless Raijin-Oh Season 1: quick answers
How many episodes are in Matchless Raijin-Oh Season 1?
Season 1 of Matchless Raijin-Oh has 51 episodes, about 20 hours in total.
When did Matchless Raijin-Oh Season 1 come out?
Season 1 premiered on 3 Apr 1991.