The Transformers (1984)

S3E11 Forever Is a Long Time Coming

The Quintessons devise a scheme to utilize a time portal to thwart the Transformers' uprising. In the process, numerous Autobots are inadvertently transported back to the battlefield, while a robot destined to play a crucial role in the future appears in the present. Meanwhile, the Quintesson's manipulation of the time portal starts to wreak havoc across the universe.