The Transformers (1984)

S2E44 War Dawn

A few Aerialbots begin to question their mission, with some expressing admiration for Megatron and contemplating a shift in allegiance. Suddenly, they find themselves caught in a time warp that transports them back to Cybertron, before the war erupted. There, they uncover deeper truths about Megatron and learn about the origins of one of their own.