This Japanese exclusive series debuted in 1987 and instead of following the events of The Rebirth trilogy, they completely ignored it. The series introduced the Headmasters and Targetmasters with a different origin.

Episodes
01. Four Warriors Come Out of the Sky
02. The Mystery of Planet Master
03. Birth of Double Convoy!
04. Operation: Cassette
05. Rebellion on Planet Beast
06. Approach of the Demon Meteorite
07. The Four-Million-Year-Old Veil of Mystery
08. Terror of the Six Shadows
09. Seibertron is in Grave Danger: Part One
10. Seibertron is in Grave Danger: Part Two
11. Scorponok, The Shadow Emperor
12. The Dormant Volcano Mysteriously Erupts
13. Head On, Fortress Maximus
14. Explosion on Mars!! Maximus is in Danger
15. Explosion on Mars!! Megazarak Appears
16. The Return of the Immortal Emperor
17. SOS from Planet Sandra
18. The Most Important Thing in the World
19. Battle to the Death on the Beehive Planet
20. Tide-turning Battle on the False Planet
21. Find Megazarak’s Weak Spot
22. Head Formation of Friendship
23. Mystery of the Space Pirate Ship
24. The Death of Ultra Magnus
25. The Emperor of Destruction Vanishes on an Iceberg
26. I Risk My Life for Earth
27. The Miracle Warriors – The Targetmasters: Part 1
28. The Miracle Warriors – The Targetmasters: Part 2
29. The Master Sword is in Danger
30. The Zarak Shield Turns the Tide
31. Operation: Destroy the Destrons
32. My Friend Sixshot!
33. Duel on the Asteroid
34. The Final Showdown on Earth: Part 1
35. The Final Showdown on Earth: Part 2