The hell you want?

"On Cybertron, one isn't born into greatness, but rather one must earn it." (I tried with the voice. Dont mind it)

Megatron is in many ways, a fallen hero. He rose up from the oppressed lower working castes of Kaon to become a champion in the region's illegal deathmatches, Megatronus; who named himself after one of the original thirteen Primes, he called for an end to Cybertron's decrepit caste system and told the downtrodden that freedom of self-determination was the right of all sentient beings. But absolute power corrupts absolutely and Megatron's Decepticon revolution, like many such movements, ended up becoming a whole new tyranny. Powerful, charismatic, violent and full of rage for any; who would stand in the way of his ambition and drive, Megatron brought Cybertron past the brink of destruction. 

Starscream was an Air Commander of the Energon Seekers, Cybertron's finest air warriors. His dream was to recover the Matrix of Leadership and become the Prime that would return the Transformers to the Golden Age, and he saw opportunity with the rebel upstart Megatron. A patient and polite schemer, Starscream used to wish Megatron would drop the heroic anti-caste charade and be more honest about his lust for power.