The Deactivation

The story would be about our different starscream, the Starscream who chose to be a Cybertronian that stood up to Galvatron/Megatron and unlike his counterparts he has no ambition to lead the decepticons for selfish reasons, Yes he may have some ideas before but he thinks that Megatron/Galvatron's vision are too brutal. He only wants peace in the cosmos. What would be our hero's journey?