Transformers: The Headmasters
Following on The Return of Optimus Prime (and in place of The Rebirth), The Headmasters is the first Japanese-exclusive Transformers franchise.

With the Decepticons having fled Earth, the Autobots begin the clean-up operation, but things go awry when a discarded bomb threatens the planet's safety. Can the newest Autobot arrivals save the day? And what are the Decepticons planning now?